Full Synthetic
15W-40 Full
Diesel Oil
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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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Built for diesel soot, acid, and shear.
The ceramic film renews itself as you drive, cutting friction on the bearings and the rings.
Patented ceramic technology for unmatched friction and wear reduction
See the complete results
Soot thickens ordinary diesel oil and acid eats the bearings. This oil holds viscosity under soot load, neutralizes acid, and the ceramic film renews itself as you drive.
Meets all major manufacturer specifications so it is safe for your diesel
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Safety Data Sheet (SDS)
Download the official Safety Data Sheet
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.