TriboDyn TRI-EX² 15W-40 Full Synthetic Heavy Duty Motor Oil
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TriboDyn TRI-EX² 15W-40 is a full synthetic heavy-duty diesel oil engineered with patented ceramic coating technology — the first oil to receive a United States Functional Patent in over 30 years. This advanced formulation actively bonds to metal surfaces, creating a self-lubricating ceramic film that reduces friction and wear under extreme pressure and heat. This technology is particularly valuable in diesel engines because it can help repair worn metal surfaces and reduce blow-by, a common issue that leads to power loss and increased oil consumption.
Independent testing has shown that TriboDyn formulations deliver measurable fuel mileage gains by dramatically reducing internal friction. Meeting or exceeding API CK-4 (the latest standard for diesel engines), API SN, and ACEA E9/E7/E4/E2 specifications, this 15W-40 oil is specifically designed for modern low-emission diesel engines equipped with EGR and DPF systems, while remaining fully backward compatible with older diesel engines.
It provides superior soot control, high detergency to keep pistons clean, and excellent TBN retention (10.0) for extended drain intervals. This oil is the ultimate choice for heavy-duty trucks, construction equipment, agricultural machinery, and mixed fleets.
Key Benefits:
- Patented ceramic coating technology that helps repair worn surfaces and reduce blow-by
- Full synthetic 15W-40 CK-4 for modern and older diesel engines
- Measurable fuel mileage gains through reduced internal friction
- Superior soot control and high detergency for clean pistons
- Excellent TBN retention (10.0) for extended drain intervals
- Compatible with EGR and DPF systems
- Backward compatible with older diesel engines
- Broad ACEA approvals (E9/E7/E4/E2)
Recommended Applications: Ideal for heavy-duty trucks, construction equipment, agricultural machinery, and mixed fleets requiring API CK-4 performance.
Technical Specifications – TriboDyn® TRI-EX2 15W-40 Full Synthetic Heavy Duty Motor Oil
Viscosity @ 100°C (ASTM D445): 15.53 cSt
Viscosity @ 40°C (ASTM D445): 109.3 cSt
Viscosity Index (ASTM D2270): 150
Density (ASTM D1475): 7.38 lb/gallon
Pour Point (ASTM D97): -39°F (-38.2°C)
Flash Point (ASTM D92): 422°F (216.7°C)
Wear Scar @ 40 kg (ASTM D4172): 0.26 mm
Coefficient of Friction @ 40 kg (ASTM D4172): 0.065
CCS Viscosity @ -30°C (ASTM D5293): 6,110 cP
NOACK Volatility (ASTM D5800): 11.6%
Meets or exceeds the following specifications:
API CK-4, CJ-4, CI-4 Plus, CI-4, CH-4, CD, SN, SM, SL, SJ, SH, SG
ACEA E7-12, E9-12, E9, E7, E4, E2
Cummins CES 20086, 20081, 20077, 20076 • Mack EOS 4.5, EO-O Premium Plus-07
Volvo VDS-4.5, VDS-4, VDS-3, VDS-2 • Mercedes Benz MB 228.3, 228.31, 228.5, 229.1, 229.5
Detroit Fluids Specification (DFS) 93K222, 93K218, 93K215 • Caterpillar ECF-3, ECF-2, ECF-1a
MAN 3575, 271, 3275, 270 • MTU 2.1 Type I and Type II • Allison C-4 • JASO DH-1 / DH-2, and many others.
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Why TriboDyn TRI-EX2 15W-40 is the ultimate diesel engine oil
Patented Ceramic Coating Technology
Actively forms a self-lubricating ceramic film on metal surfaces under heat and pressure, repairing micro-pits and scratches left by previous oils — dramatically reducing internal friction.
Maximum Fuel Economy & MPG Gains
Dramatically reduces internal friction, delivering real-world fuel mileage improvements of 4–8% and better throttle response in modern high output diesel engines.
Ultimate High-Mileage Oil
The patented ceramic coating actively repairs small pits, scratches, and wear scars inside your engine, restoring compression, power, and performance — making TRI-EX² 15W40 the ultimate high-mileage motor oil for vehicles kept on the road longer.
Measurable Horsepower Increases
Independent dyno testing proves TRI-EX² delivers real, measurable horsepower gains. The patented ceramic coating dramatically reduces internal friction, allowing your engine to produce more usable power while maintaining superior protection and efficiency.
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Meets or Exceeds Demanding Industry Specifications
API CK-4, CJ-4, CI-4 Plus, CI-4 • ACEA E7, E9 • MB 228.51, 228.31 • Volvo VDS-4.5, VDS-4 • Mack EOS-4.5 • Cummins CES 20086 • Detroit Diesel DFS 93K222
100% Customer Satisfaction
Hundreds of 5-star reviews • Perfect 100% rating on eBay for over 5 years. You are buying the worlds best oil, our shipping speed, packing, and service is 2nd to none.
Made in the USA
Exclusively manufactured in our own ISO 9001 certified facility. Unmatched purity and quality in every drop.
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Safety Data Sheet (SDS)
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Frequently Asked Questions
Yes. This full synthetic 15W40 is formulated with strong soot dispersancy additives that help keep soot particles suspended in the oil, preventing them from clumping and causing abrasive wear. Combined with our high film strength and patented ceramic coating technology, it provides excellent protection against the increased wear that soot can create inside diesel engines — especially under heavy load, towing, or extended drain intervals.
It contains patented ceramic coating technology that actively forms a self-lubricating protective film on metal surfaces under heat and pressure. This repairs micro-pits and wear scars left by other oils, delivering superior protection in today’s tight-tolerance modern engines.
The ceramic coating seeks out and fills small pits, scratches, and wear areas inside the engine, restoring compression, power, and smoothness. This makes TRI-EX² SAE 15W-40 the ultimate high-mileage motor oil for vehicles kept on the road longer.
Yes. Customers commonly report 4–8% better fuel mileage because the ceramic coating dramatically reduces internal friction, allowing the engine to run more efficiently while maintaining excellent protection.
Yes. TriboDyn Tri-EX2 meets and usually exceeds the most vehicles engine warranty requirements. This includes API CK-4, CJ-4, CI-4 Plus, CI-4 which are the industry standards for engine warranties.
All TriboDyn TRI-EX² motor oils are proudly manufactured in our own ISO 9001 certified facility in the United States by a team of experienced tribologists who have engineered lubricants for aerospace, racing, and heavy industry for decades.
