Automotive Lubricant Additives

automotive lubricant additives

API CK-4 Heavy-Duty Diesel Engine Oil Additive Package

API CK-4 heavy-duty diesel engine oil additive packages are complete additive concentrates formulated for heavy-duty diesel engines equipped with advanced exhaust aftertreatment systems (EGR, DPF, SCR). These packages deliver improved oxidation resistance, shear stability, aeration control, and soot-handling dispersancy versus prior CJ-4 chemistry. They are designed for use with Group II and III base oils at 10–16% treat rate and must pass a demanding sequence of industry engine dyno and bench tests.

automotive lubricant additives

API SN/SP Passenger Car Engine Oil Additive Package

API SN/SP passenger car engine oil additive packages are complete, fully balanced additive concentrates designed for blending with Group II, III, or IV base oils to produce finished engine oils meeting the latest API SN Plus, SP, and ILSAC GF-6A/GF-6B specifications. These packages contain optimized combinations of detergents, dispersants, antiwear additives, antioxidants, friction modifiers, corrosion inhibitors, and foam suppressants. They are tested and approved against the latest ASTM and CEC engine sequences.

automotive lubricant additives

Alkylated Diphenylamine (ADPA) Antioxidant

CAS: 68411-46-1

Alkylated diphenylamine (ADPA) is a high-performance secondary aminic antioxidant produced by alkylating diphenylamine with olefins to improve oil solubility and reduce volatility compared to unalkylated DPA. ADPA provides superior high-temperature oxidation protection and is particularly effective in modern engine oils, aviation turbine oils, and high-temperature industrial lubricants. The C4–C9 alkyl substituents dramatically improve oil compatibility without sacrificing radical-scavenging activity.

automotive lubricant additives

Amine Phosphate Antiwear Additive

CAS: 61789-79-5

Amine phosphates are ashless antiwear additives formed by the neutralization of phosphoric or phosphorous acid with fatty amines, delivering effective wear protection without contributing zinc or other metals to the formulation. They are particularly valued in zinc-free hydraulic fluids, environmentally acceptable lubricants (EAL), and applications where ZDDP is restricted. Amine phosphates also provide rust inhibition and mild acid neutralization, making them multifunctional components in hydraulic and circulating oil formulations.

automotive lubricant additives

Aromatic Seal Swell and Conditioner Additive

Seal swell and conditioner additives are aromatic ester or polycyclic aromatic compounds used in lubricants to maintain the flexibility and dimensional integrity of elastomeric seals throughout service life. Without seal conditioners, elastomers can shrink, harden, and crack in synthetic or highly refined base oils, leading to oil leaks. These additives are essential in automatic transmission fluids, power steering fluids, and synthetic engine oils to ensure compatibility with NBR, HNBR, and PTFE seals.

automotive lubricant additives

Automatic Transmission Fluid (ATF) Additive Package

Automatic transmission fluid (ATF) additive packages are precisely balanced concentrates that deliver the complex combination of friction, anti-shudder, antiwear, oxidation stability, foam control, and seal compatibility properties demanded by modern automatic transmissions. These packages must simultaneously control static and dynamic friction coefficients with extreme precision to enable smooth clutch engagement and prevent lock-up clutch shudder. They are formulated to meet OEM specifications including Dexron VI, Mercon LV, and Toyota T-IV/T-V standards.

automotive lubricant additives

Barium Dinonylnaphthalene Sulfonate Rust Inhibitor

CAS: 25619-56-1

Barium dinonylnaphthalene sulfonate is a classical high-performance rust and corrosion inhibitor with exceptional water-displacing properties, used in protective oils, rust preventive compounds, and metalworking fluids. The barium salt form provides stronger adsorption on metal surfaces compared to calcium analogues and is particularly effective in humidity-cabinet and salt-spray testing conditions. It remains the benchmark rust inhibitor for long-term storage and preservation applications despite newer alternatives.

automotive lubricant additives

Calcium Complex Soap Grease Thickener

Calcium complex soap thickeners are produced by the co-crystallization of calcium long-chain fatty acid soaps with calcium acetate or calcium borate, creating a complexed crystal structure with a dropping point of 250–280°C — significantly higher than simple calcium soap. Calcium complex greases offer exceptional water resistance and adhesiveness, making them the preferred choice for steel mill, food-grade, and high-temperature applications where water contamination is unavoidable.

automotive lubricant additives

Calcium Petroleum Sulfonate Emulsifier for Metalworking

CAS: 61791-12-6

Calcium petroleum sulfonate emulsifiers are anionic surfactants widely used in soluble oil and semi-synthetic metalworking fluid concentrates to form stable oil-in-water emulsions with tap water of varying hardness. They provide simultaneous emulsification, mild rust inhibition, and lubricity enhancement. The calcium sulfonate structure offers superior emulsion stability versus sodium sulfonates, particularly in hard water conditions common in manufacturing environments.

automotive lubricant additives

Calcium Salicylate Detergent

CAS: 19825-98-4

Calcium salicylate detergent is an overbased metal detergent additive that provides excellent acid neutralization, antioxidant activity, and high-temperature deposit control in engine oils. The salicylate structure offers inherent antioxidant functionality through its phenolic moiety, differentiating it from sulfonate and phenate detergents. It is widely used in modern low-SAPS engine oil formulations (ACEA C1/C2/C3/C4) and has become the preferred detergent for stringent exhaust aftertreatment-compatible lubricants.

automotive lubricant additives

Chlorinated Paraffin Extreme Pressure Additive for Metalworking

Chlorinated paraffins (CPs) are among the most effective extreme pressure additives for heavy-duty metalworking operations including deep drawing, tapping, and gear hobbing, where contact pressures exceed the capability of sulfur and phosphorus-based EP additives alone. The chlorine content reacts with iron under tribological stress to form iron chloride low-shear films. Available in short, medium, and long chain lengths with 40–70% chlorine content, they are widely used in neat cutting oils and metalforming lubricants worldwide.

automotive lubricant additives

Colloidal Graphite Solid Lubricant Additive

CAS: 7782-42-5

Colloidal graphite is a suspension of ultrafine graphite platelets (typically 1–10 μm) in oil or water carriers, used as a solid lubricant additive in greases, cutting fluids, and extreme-pressure lubricants. The layered hexagonal structure of graphite provides excellent lubrication under high load and high temperature conditions where conventional lubricants fail. Graphite is particularly effective in open gear, wire rope, and high-temperature furnace applications where environmental contamination of PTFE and MoS2 can occur.

automotive lubricant additives

DEG Monooleate Corrosion Inhibitor for Metalworking

CAS: 141-20-8

Diethylene glycol monooleate (DEG monooleate) is a non-ionic ester surfactant used as a mild corrosion inhibitor, emulsifier, and lubricity additive in water-based metalworking fluids. Its dual hydrophilic-lipophilic structure adsorbs onto metal surfaces while maintaining miscibility with water, providing effective ferrous corrosion protection in diluted cutting fluids. DEG monooleate also acts as a coupling agent to improve compatibility between the oil and water phases in semi-synthetic fluids.

automotive lubricant additives

Dibenzyl Disulfide (DBDS) Extreme Pressure Additive

CAS: 150-60-7

Dibenzyl disulfide (DBDS) is a highly effective thermally active sulfur-based extreme pressure additive used in gear and metalworking lubricants. The benzylic C–S bond cleaves readily under tribological stress, releasing reactive sulfur that reacts with iron to form a low-shear-strength iron sulfide film, preventing seizure under high contact pressures. DBDS delivers excellent 4-ball EP performance and is commonly blended with phosphorus-based antiwear additives in GL-5 gear oil packages.

automotive lubricant additives

Dimercaptothiadiazole (DMTD) Metal Deactivator

CAS: 1072-71-5

2,5-Dimercapto-1,3,4-thiadiazole (DMTD) is a highly effective metal deactivator and copper corrosion inhibitor used in lubricants and fuels to prevent catalytic oxidation by copper and other transition metals. It forms stable chelate complexes with copper ions at ppm concentrations, passivating copper and brass surfaces and neutralizing pro-oxidant metal ions in solution. DMTD is essential in gear oils and engine oils that contact copper alloy components in gearboxes, bearings, and coolers.

automotive lubricant additives

Dinonylnaphthalene Sulfonic Acid (DNNSA) Rust Inhibitor

CAS: 57855-77-3

Dinonylnaphthalene sulfonic acid (DNNSA) and its calcium and barium salts are highly effective corrosion and rust inhibitors widely used in engine oils, gear oils, hydraulic fluids, and protective oils. The bulky naphthalene sulfonate structure forms a tenacious adsorbed film on metal surfaces that displaces water and inhibits both ferrous and non-ferrous corrosion. DNNSA is particularly valued in rust preventive oils and long-term storage lubricants where superior water-displacement is critical.

automotive lubricant additives

Diphenylamine (DPA) Antioxidant

CAS: 122-39-4

Diphenylamine (DPA) is a secondary aminic antioxidant that provides excellent protection against oxidative degradation in lubricants by scavenging alkyl and peroxyl radicals. It reacts with oxidation products to form stable nitroxide and carbocation intermediates that break the autoxidation chain. DPA and its alkylated derivatives are preferred antioxidants in high-temperature lubricants, turbine oils, and compressor oils where temperatures exceed the effective range of phenolic antioxidants.

automotive lubricant additives

Fumarate Copolymer Pour Point Depressant

Fumarate ester copolymers are non-PMA pour point depressants that are particularly effective in Group I base oils and paraffinic stocks where PMA performance is limited. They are also used as wax crystal modifiers in diesel fuel and middle distillate additives. Their mechanism involves co-crystallization with wax, preventing the formation of continuous wax networks that restrict low-temperature flow. These products are valuable as pour point depressants in residual fuel oils and heavy bunker fuel treatments.

automotive lubricant additives

GL-4/GL-5 Gear Oil Additive Package

Complete GL-4/GL-5 gear oil additive packages combine extreme pressure, antiwear, corrosion inhibition, foam suppression, and oxidation protection in a single blendable concentrate. These packages are formulated to meet API GL-4 (manual transmission and transaxle) and GL-5 (hypoid axles) specifications, ensuring passage of the CRC L-33, L-60, L-37, and FZG gear tests. They are designed for efficient blending with Group I, II, and III base oils at treat rates of 4–8% to produce finished automotive gear lubricants.

automotive lubricant additives

Gas Engine Oil Additive Package

CAS: N/A (formulated package)

Gas engine oil additive package formulated for stationary and mobile natural gas, CNG, LNG and LPG engines. Provides controlled sulfated ash content (low/medium-ash variants) to balance valve seat protection against ash-induced spark plug fouling. Delivers oxidation resistance for the high-NOx, dry combustion environment characteristic of gas engines. Richful RF6208 (medium-ash mobile long-mileage variant) is a typical grade for CNG truck and bus engines.

automotive lubricant additives

Glycerol Monooleate (GMO) Friction Modifier

CAS: 111-03-5

Glycerol monooleate (GMO) is a cost-effective, ashless friction modifier derived from oleic acid and glycerol, widely used in automotive and industrial lubricants to reduce stick-slip behavior and improve fuel efficiency. Its polar head group adsorbs strongly onto metal surfaces, forming a boundary-lubrication film that reduces the coefficient of friction in low-speed, high-load contacts. GMO is fully biodegradable and compatible with both mineral and synthetic base oils.

automotive lubricant additives

Hindered Phenol Antioxidant for Lubricants

CAS: 68411-46-1

Hindered phenol antioxidants are radical chain-terminating antioxidants that donate hydrogen atoms to peroxyl radicals, interrupting the autoxidation cycle and dramatically extending lubricant service life. Compounds in this class, including 2,6-di-tert-butyl-4-methylphenol (BHT) and high-MW polymeric hindered phenols, are used across engine oils, hydraulic fluids, and turbine oils. They synergize strongly with aminic antioxidants to provide balanced primary antioxidation at all severity levels.

automotive lubricant additives

Hydrogenated Styrene-Isoprene (HSD) Viscosity Index Improver

CAS: 9010-79-1

Hydrogenated styrene-diene (HSD) VI improvers are star-structured block copolymers offering superior oxidative stability, excellent low-temperature performance, and high thickening efficiency in a single additive. The hydrogenation step eliminates residual double bonds, greatly improving stability against oxidation and thermal degradation. HSD is the preferred VI improver for premium low-viscosity engine oils (0W-16, 0W-20) and modern transmission fluids that require extreme low-temperature cranking performance.

automotive lubricant additives

Isothiazolinone Biocide for Metalworking Fluids

Isothiazolinone-based biocides are the most widely used antimicrobial additives in water-miscible metalworking fluids, preventing bacterial and fungal contamination that causes fluid degradation, unpleasant odors, and health risks for machine operators. Blends of 5-chloro-2-methyl-4-isothiazolin-3-one (CMIT) and 2-methyl-4-isothiazolin-3-one (MIT) provide broad-spectrum efficacy against bacteria, yeast, and molds at low concentrations. Proper biocide management extends metalworking fluid service life and reduces disposal costs.

automotive lubricant additives

Lithium 12-Hydroxystearate Grease Thickener

CAS: 7620-77-1

Lithium 12-hydroxystearate (lithium 12-HSA) is the foundation thickener for the world's most widely used multipurpose greases (NLGI #1, #2, #3). It forms a fibrous soap network in mineral or synthetic base oils that provides excellent structural stability, water resistance, and shear stability at temperatures up to 120°C. Lithium greases thickened with 12-HSA dominate automotive wheel bearing, chassis, and industrial general-purpose grease applications globally.

automotive lubricant additives

Low Molecular Weight Polyisobutylene (PIB) Thickener

CAS: 9003-27-4

Low to medium molecular weight polyisobutylene (PIB) is a highly branched, viscous polymer used as a tackifier and thickener in lubricating greases, chain oils, and adhesive lubricants. Its exceptional tackiness and film-forming properties prevent lubricant throw-off from high-speed chains, gears, and open mechanisms. PIB is also widely used as a component in compounded gear oils, two-stroke engine oil base components, and as a processing aid in rubber compounding.

automotive lubricant additives

Mannich Base Nitrogen Dispersant

Mannich base dispersants are synthesized by the condensation of alkyl-substituted phenols with formaldehyde and polyamines, producing nitrogen-containing oil-soluble dispersants with excellent deposit control and sludge-dispersing capability. Unlike succinimide dispersants, Mannich bases offer superior high-temperature varnish inhibition and are particularly effective in gasoline engine oil formulations and turbocharged engine oils where oxidative deposit control is critical.

automotive lubricant additives

Marine Cylinder Oil Additive Package

CAS: N/A (formulated package)

Marine cylinder oil additive package for total-loss lubrication of two-stroke crosshead diesel engine cylinder liners. Delivers very high TBN reserve (typically 25-100 mgKOH/g in finished oil) to neutralize sulfuric acid produced by combustion of high-sulfur or low-sulfur marine fuels. Multiple grade tiers (BN 25, 40, 70, 100) match the sulfur content of the bunker fuel: low-sulfur compliant fuel (VLSFO ≤0.5% S) → BN 25-40; high-sulfur fuel (HSFO, 3.5% S) used with scrubbers → BN 70-100.

automotive lubricant additives

Marine System Oil Additive Package

CAS: N/A (formulated package)

Marine system oil additive package formulated for crankcase and circulation lubrication of two-stroke crosshead marine diesel engines. Provides detergency, dispersancy, antiwear and corrosion control across the engine's cooling, bearing and underpiston spaces — environments exposed to fuel oil contamination, water ingress, and high-temperature combustion gas blow-by. Treat rate typically 4-6% in SAE 30 mineral or Group II base oils.

automotive lubricant additives

Medium-Speed Trunk Piston Engine Oil Additive Package

CAS: N/A (formulated package)

Medium-speed trunk piston engine oil additive package for four-stroke trunk piston diesel engines used in marine auxiliary, power generation, locomotive, and stationary applications. Operates at 300-1000 rpm with combined crankcase + cylinder lubrication (no separate cylinder oil). Provides controlled TBN (typically 25-55 mgKOH/g in finished oil) to handle the moderate-sulfur HFO, MGO, and dual-fuel operation of these engines. Compatible with all major OEM specifications including MAN ES (medium-speed), Wärtsilä W series, MaK, and Caterpillar 3500 series.

automotive lubricant additives

Molybdenum Disulfide (MoS2) Solid Lubricant Additive

CAS: 1317-33-5

Molybdenum disulfide (MoS2) is a naturally-occurring layered sulfide mineral that is one of the most effective solid lubricants known, providing extremely low friction (μ = 0.03–0.05) under high load, high vacuum, and extreme temperature conditions. Its van der Waals-bonded lamellar structure allows easy interlayer shear, forming a persistent lubricating transfer film on metal surfaces. MoS2 is an essential additive in high-performance greases, thread compounds, and dry film lubricants for aerospace, automotive, and industrial machinery.

automotive lubricant additives

Molybdenum Dithiocarbamate (MoDTC)

CAS: 68412-36-2

Molybdenum dithiocarbamate (MoDTC) is an oil-soluble organo-molybdenum compound widely used as a friction modifier in engine and drivetrain lubricants. It decomposes under tribological stress to generate in-situ MoS2 nanoparticles that reduce boundary friction coefficient by 30–50%, improving fuel economy. MoDTC is a key component of fuel-efficient engine oil formulations meeting ILSAC GF-5/GF-6 and ACEA C2/C3 specifications.

automotive lubricant additives

Molybdenum Dithiophosphate (MoDTP)

Molybdenum dithiophosphate (MoDTP) combines the antiwear functionality of dithiophosphate chemistry with the friction-reducing capability of organo-molybdenum, offering a dual-action performance additive for premium lubricant formulations. Unlike MoDTC, MoDTP also contributes phosphorus-based antiwear protection, making it effective in both boundary and mixed lubrication regimes. It is particularly valued in gear oils, automatic transmission fluids, and high-performance engine oils.

automotive lubricant additives

Olefin Copolymer (OCP) Viscosity Index Improver

CAS: 9010-77-9

Olefin copolymer (OCP) VI improvers, based on ethylene-propylene copolymers, are the most widely used viscosity modifiers in engine oils and gear oils due to their excellent shear stability and cost-effectiveness. They improve the viscosity-temperature relationship to enable multi-grade formulations and demonstrate outstanding mechanical shear stability in service, making them ideal for heavy-duty diesel engine oils that must retain their viscosity grade through long drain intervals.

automotive lubricant additives

Oleic Acid Based Corrosion Inhibitor for Lubricants

CAS: 112-80-1

Oleic acid and its derivatives (including oleyl sarcosine, dioleyl phosphate, and amine oleates) are widely used as mild corrosion inhibitors, friction modifiers, and boundary lubrication additives in metalworking fluids, gear oils, and hydraulic lubricants. The polar carboxylic acid group adsorbs onto ferrous and non-ferrous metal surfaces, forming a protective monomolecular film that inhibits corrosion and reduces friction at low contact loads.

automotive lubricant additives

Overbased Calcium Sulfonate Detergent (High TBN)

CAS: 61789-86-4

Overbased calcium sulfonate is the primary detergent additive in engine oil formulations, providing acid neutralization, deposit prevention, and corrosion protection. The colloidal calcium carbonate core suspended in the sulfonate carrier delivers high TBN (300–400 mg KOH/g) to neutralize acidic combustion and oxidation byproducts throughout the oil drain interval. It is essential in heavy-duty diesel engine oils meeting API CK-4/FA-4 and marine diesel oil formulations.

automotive lubricant additives

Overbased Magnesium Sulfonate Detergent

CAS: 61789-87-5

Overbased magnesium sulfonate detergent offers excellent acid neutralization and high-temperature deposit control, making it a preferred alternative or complement to calcium sulfonate in engine oil and marine lubricant formulations. The magnesium sulfonate structure provides superior high-temperature detergency for controlling piston and ring belt deposits in turbocharged diesel engines. It is widely specified in marine two-stroke cylinder oils and aviation piston engine lubricants where magnesium ash is preferred.

automotive lubricant additives

PTFE Powder Additive for Greases and Lubricants

CAS: 9002-84-0

Micronized polytetrafluoroethylene (PTFE) powder is used as a solid lubricant additive in greases and dry lubricants, reducing the coefficient of friction and improving wear resistance under light- to medium-load boundary lubrication conditions. PTFE particles deposit on metal surfaces to form a low-energy, low-friction transfer film. They are particularly effective in precision bearings, instrument mechanisms, and thread compounds where conventional lubricants would cause interference or contamination.

automotive lubricant additives

Phenothiazine Radical Scavenger Antioxidant

CAS: 92-84-2

Phenothiazine is a potent radical-scavenging antioxidant containing both sulfur and nitrogen heteroatoms, providing synergistic primary antioxidation when used alongside conventional phenolic and aminic antioxidants. Its unique tricyclic structure allows it to donate electrons to radical species at much lower concentrations than standard antioxidants. Phenothiazine is particularly effective as a thermal stabilizer in high-temperature synthetic lubricants, ester-based fluids, and specialty lubricant formulations where conventional antioxidants reach their thermal limits.

automotive lubricant additives

Polyisobutenyl Succinic Anhydride (PIBSA)

CAS: 28777-98-2

Polyisobutenyl succinic anhydride (PIBSA) is the key intermediate in the synthesis of PIBSI dispersants, produced by the thermal or chlorination-free ene reaction of high-reactivity polyisobutylene with maleic anhydride. It is also used directly as a corrosion inhibitor and emulsifier in metalworking fluids, fuel additives, and specialty lubricants. The anhydride functionality reacts readily with amines, alcohols, and other nucleophiles to produce customized lubricant additive molecules.

automotive lubricant additives

Polyisobutenyl Succinimide (PIBSI) Dispersant

CAS: 84605-19-6

Polyisobutenyl succinimide (PIBSI) is the most widely used ashless dispersant in engine oil formulations, keeping soot, oxidation products, and carbonaceous deposits suspended in the oil and preventing sludge and varnish formation. The polyisobutenyl tail provides oil solubility while the succinimide head group strongly associates with polar contaminants. PIBSI is essential in every modern engine oil package from PCMO to HDEO, enabling extended drain intervals and clean engine operation.

automotive lubricant additives

Polymethacrylate (PMA) Pour Point Depressant

CAS: 25087-26-7

Polymethacrylate (PMA) pour point depressants work by co-crystallizing with wax molecules in petroleum-derived base oils, disrupting the wax crystal network and preventing gelation at low temperatures. They enable formulation of engine oils and industrial lubricants with pour points as low as -45°C, meeting stringent cold-start performance requirements. PMA PPDs are effective across Group I, II, and III base oils and are compatible with OCP VI improvers in multi-grade formulations.

automotive lubricant additives

Polymethacrylate (PMA) Viscosity Index Improver

CAS: 25087-26-7

Polymethacrylate (PMA) viscosity index improvers are comb-polymer additives that reduce the change in viscosity with temperature, enabling the formulation of multi-grade engine oils and gear oils with excellent low-temperature fluidity and high-temperature viscosity retention. PMA VI improvers also provide inherent pour point depressant functionality. They are extensively used in passenger car motor oils (0W-20 to 5W-40), ATF, and gear oils requiring both viscosity modification and low-temperature performance.

automotive lubricant additives

Polyurea (Diurea) Grease Thickener

Polyurea (diurea) grease thickeners are formed in-situ by the reaction of diisocyanates with amines during grease manufacturing. The resulting non-soap thickener network provides superior high-temperature stability, with dropping points exceeding 250°C, making polyurea greases the standard choice for electric motor bearings and high-temperature industrial applications. Polyurea greases also exhibit excellent oxidative stability due to the absence of metallic soap, making them preferred in sealed-for-life bearing applications.

automotive lubricant additives

Power Steering Fluid (PSF) Additive Package

Power steering fluid (PSF) additive packages are formulated to meet the demanding requirements of hydraulic power steering systems, including antiwear protection for the pump and rack components, seal compatibility with multiple elastomer materials, oxidative stability, and effective operation across a wide temperature range (-40°C to +150°C). These packages also address the requirements of modern electric power steering (EPS) reservoir fluids and column-type EPS fluids, where low viscosity and electrical insulation properties are added requirements.

automotive lubricant additives

Silicone Antifoam Agent for Lubricants (PDMS)

CAS: 9006-65-9

Polydimethylsiloxane (PDMS) silicone fluid is the most widely used antifoam agent in engine oils, gear oils, and industrial lubricants, providing effective foam suppression at extremely low treat rates (1–5 ppm). PDMS reduces surface tension at the air-oil interface, causing rapid foam bubble collapse. It is included in virtually every modern automotive and industrial lubricant formulation to meet sequence foaming test requirements (ASTM D892, Sequence I-III).

automotive lubricant additives

Styrene-Butadiene (SBR) Viscosity Index Improver

CAS: 9003-55-8

Styrene-butadiene (SBR) block copolymers are versatile viscosity index improvers used in automatic transmission fluids, power steering fluids, and hydraulic oils where both low-temperature fluidity and high-temperature viscosity retention are critical. The star-polymer architecture provides excellent low-temperature performance while the high molecular weight ensures effective thickening. Hydrogenated grades offer improved oxidative stability for applications requiring extended service life.

automotive lubricant additives

Sulfurized Calcium Phenate Detergent

CAS: 61789-51-3

Sulfurized calcium phenate is an overbased detergent additive that combines strong acid neutralization with excellent high-temperature thermal stability, making it a preferred component in heavy-duty diesel, marine, and gas engine oil formulations. The sulfurized phenate structure provides superior deposit control under extreme temperature conditions compared to sulfonates, particularly in controlling piston varnish in gas engines. It is commonly used alongside calcium sulfonates to achieve balanced detergency across temperature ranges.

automotive lubricant additives

Sulfurized Olefin Extreme Pressure Additive

CAS: 68952-81-8

Sulfurized olefins are reactive sulfur-containing extreme pressure (EP) additives produced by the reaction of olefins with elemental sulfur or sulfur chlorides. They form iron sulfide protective films at asperity contact points under high-load gear and bearing contacts, preventing scuffing and welding. Available in active and inactive sulfur variants, they are core components in GL-4/GL-5 gear oils and heavy-duty industrial lubricants.

automotive lubricant additives

Tolyltriazole (TTA) Metal Deactivator for Lubricants

CAS: 29385-43-1

Tolyltriazole (TTA) is a heterocyclic metal deactivator and corrosion inhibitor widely used in lubricants, coolants, and fuels to protect copper, brass, bronze, and other non-ferrous metals. TTA forms a stable protective coordination complex on copper surfaces, blocking oxidative attack and preventing catalytic pro-oxidation by dissolved copper ions. It is an essential component in engine oils, hydraulic fluids, automatic transmission fluids, and water-based metalworking fluids containing mixed metal components.

automotive lubricant additives

Tricresyl Phosphate (TCP) EP/Antiwear Additive

CAS: 1330-78-5

Tricresyl phosphate (TCP) is a well-established aryl phosphate ester used as an extreme pressure and antiwear additive in aviation turbine oils, industrial gear oils, and high-performance automotive lubricants. It forms a tenacious iron phosphate tribofilm at elevated temperatures that protects against scuffing under shock loading. TCP is the benchmark antiwear additive in aviation turbine oils certified to MIL-PRF-23699 and DEF STAN 91-097.

automotive lubricant additives

Triphenyl Phosphate (TPP) EP Additive

CAS: 115-86-6

Triphenyl phosphate (TPP) is an aryl phosphate ester that functions as an antiwear and mild extreme-pressure additive in lubricants and hydraulic fluids. It forms a thin iron phosphate layer on metal surfaces at elevated temperatures, protecting against abrasive wear. TPP also provides excellent fire-resistant properties and is used in turbine oils, compressor lubricants, and phosphate ester-based hydraulic fluids where both lubricity and fire resistance are needed.

automotive lubricant additives

Two-Stroke Engine Oil Additive Package

Two-stroke engine oil additive packages are specially formulated for air-cooled and water-cooled two-stroke gasoline engines, providing excellent lubrication, deposit control, and combustion cleanliness in the demanding pre-mix and injection lubrication modes. These packages are formulated to meet JASO FC/FD standards for smoke reduction and ring-sticking prevention. They combine ashless detergents, dispersants, antioxidants, and lubricity additives compatible with fuel-mixed delivery systems.

automotive lubricant additives

Zinc Dialkyldithiophosphate (ZDDP)

CAS: 68457-79-4

Zinc dialkyldithiophosphate (ZDDP) is the cornerstone multifunctional additive in engine oil formulations, delivering simultaneous antiwear, extreme-pressure, and antioxidant performance. It forms a protective tribofilm on metal surfaces under boundary lubrication conditions, dramatically extending component life. Widely specified in API SN/SP, ACEA A3/B4, and OEM-approved passenger car and heavy-duty engine oil packages.

automotive lubricant additives

Zinc Hydraulic Oil Additive Package

CAS: N/A (formulated package)

Zinc-based hydraulic oil additive package providing antiwear, anti-oxidation, anti-rust, anti-foam, and demulsibility performance for industrial hydraulic fluids. Built around ZDDP anti-wear chemistry that has powered the hydraulic industry since the 1950s, meeting Eaton 35VQ25, Denison HF-0, DIN 51524-2 HLP and ISO 11158 HM specifications. Typical treat rate 0.7-1.2% in mineral hydraulic oils (ISO VG 32/46/68).