TriboDyn TRI-EX² 5W-40 Full Synthetic Heavy Duty Motor Oil
Patented Ceramic Coating Technology • Repairs High-Mileage Wear • Excellent High-Temperature Protection • Superior Performance for Diesel Engines
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Why TriboDyn TRI-EX2 5W-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 5W40 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 • MAN M 3575 • Renault RLD-3
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 5W-40 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 5W-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 SP and earlier specs, ILSAC GF-6A 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.
