5.0 / 5.0
(44) 44 total reviews
Full synthetic, friction-modified 5W-40 diesel engine oil for all API CK-4 heavy duty diesel engines equipped with DPF, SCR and EGR systems.. Ideal for diesel pick-ups (Powerstroke, Duramax, Cummins), semis, heavy equipment. Volvo, CAT, Ford, GMC and many others.
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55 gal drums and 265 gal totes ships within 5-10 business days. Everything else ships within 1 business day. For additional information please see our Shipping Policy.
Description
TRIAX Fleet Supreme synthetic diesel engine oils are the top choice for maximizing engine performance. These are state-of-the-art engine oils are built with performance as a priority while maintaining complete OEM spec compliance. TRIAX Fleet Supreme oils are fully formulated products synthetics, designed for complete API CK-4 compliance and exceed OEM specifications for advanced turbocharged diesel engines, such as Volvo, Cummins, Detroit Diesel, Mercedes Benz and Ford fitted with exhaust after-treatment devices such as DPF and SCR.
The ideal choice for long haul trucks, pickups, including Powerstroke, Duramax, Cummins and many others.
- Excellent durability even in adverse conditions such as towing, hauling,
- High shear stability, stays in grade even under high loads and temperatures
- Exceeds all CK-4 related OEM specifications.
- 48% less wear vs the CK-4 specification requirements.
- Noticeably quieter engine operation • Faster, quieter turbo charger spooling
- Eliminates stiction in HEUI injectors
- Large specification coverage across many OEMs.
- Extended drain intervals: 25,000 miles for pickups and over 100,000 miles for long haul semi trucks.
Available Viscosity Grades: 5W-40, 10W-30, 15W-40 and 5W-30
Specifications
- API CK-4, CI-4 and CI-4 Plus
- API SN, SL (15W-40, 5W-30)
- Military Specification MIL-PRF-2104K
- Caterpillar ECF-3
- Volvo VDS-3, VDS-4, VDS-4.5
- ACEA E7, E9-12
- Mercedes Benz MB 228.51, 228.31
See data sheet for all specs.

Been using this in my Ford 6.7 for three years now. The engine runs quiet and smooth and no typewriter tick after oil changes.
I have been used Fleet Supreme engine oil for my truck for more than three years this product is awesome
Been using Rotella full synthetic, now using Triax. Using in our RAM 6.7’s working great so far.
Best viscosity index for your money!!!
A superb product! I use Triax in all of my vehicles from lawn mowers, jet skis, motorcycles, trucks, and cars. Never a problem and there's a noticeable improvement in starting, and noise reduction. Recommended highly!
this is my first time using this brand of oil. I haven’t driven the truck much since I changed the oil, but the rating comes from the price point of the product, which is great even without the discount, as well as the ease of pouring the oil due to the expanding Fillar neck.
Very good product for Cummings X15 . 16K miles same level oil!!! Quieter engine sound than Amsoil!
Been using Triax for almost 10 years. I use it in everything 7.3L, 6.6L Duramax, tractors, skid steers, Subaru even the generators. I always have 1-2 oil changes on hand.
Good oil, good price, nice packaging for simple oil changes.
Great product; fast shipping!
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20+ Years In Business
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1M+ Customers Worldwide
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Manufactured in the USA