Heavy Duty Diesel Oils
TRIAX FLEET SUPREME 15W-40 Synthetic
Friction Modified Heavy Duty Diesel Oil, CK-4

TRIAX FLEET SUPREME 15W-40 Synthetic

Friction Modified Heavy Duty Diesel Oil, CK-4

TRIAX Fleet Supreme synthetic diesel engine oils are the ultimate choice for maximizing engine performance. These are state-of-the-art engine oils built with performance as a priority while maintaining complete OEM spec compliance . TRIAX Fleet Supreme oils are fully formulated products, designed to both API CK-4 compliant and to meet and exceed both the API CK-4 specification and all related OEM specifications in the CK-4 family, such as Volvo, Cummins, Detroit Diesel, Mercedes Benz and Ford fitted with exhaust after-treatment devices such as DPF and SCR.

Viscosity Grade:
15W-40
Oil Type:
Full Synthetic
Core Specifications:
API CK-4
CAT ECF-3
Mack EOS 4.5 & Previous
VOLVO VDS 4.5
AVAILABLE VISCOSITY GRADES
UNIQUE ANTI-WEAR TECHNOLOGY
SUPERIOR PERFORMANCE
WIDE RANGING COMPATIBILITY
USED IN THE MOST POPULAR DIESEL TRUCKS
SAFE, LONG DRAIN INTERVALS
CUSTOMER REVIEWS (4)
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REVIEW THIS PRODUCT
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Michael | Apr 08, 2021
Great product
Been using product for about 2 years since it was first recommended by a shop where I get my trucks worked on. Ever since, zero stiction and way better engine operation. No other oil I have used comes close.
Peter Hall | Sep 30, 2021
Pleasantly surprised
Excellent quality. Engine sounds great. Going on 18,000 miles on my truck with it. Found my new favorite oil.
David | Sep 30, 2021
Goodbye Rotella
Switched from Rotella to Triax a few weeks ago, what a difference. The most noticeable difference is the significantly quieter engine and about 6% better MPG. Going uphill feels a lot less sluggish too.
J.R. | Apr 04, 2024
Everyone has their own preference on oil. I was pennzoil for years in the vehicles after I found out it was closest to cen-pe-co that saved an engine that actually blew the oil filter seal! Seriously, 45yrs old now and only one. Drove it 23miles home and right before I parked it there was lifter tick. Few years ago my brother passed and I took over his car. He built the engine and had oil analysis done. It was recommended to him to run Rotella t6. After other oil analysis' was done it was proven to be best. I then had multiple Polaris's at that time. Thousands of miles and hundreds of hours with t6 everything was clean and ran great. Bought a TYM 474C and up for first service, I dug into certifications and specs. No company had full Synthetic standard certifications for all 3 oils needed. I sent out samples. Bought Triax oil for all three. Full Synthetic in everything. Everything is quieter. Steering, engine, hydo and the hydraulic pump are all smoother and quieter. Engine oil is a dark brown from all the additives and the hydraulic oil is dyed red so it's easy to see in the sight glass. The gear oil pores thin when cold but after being ran and hot when checked drips off the dipstick slow like molasses. Kind of long winded I know but can't say enough good things about their oil and can't wait another 80ish hours for another oil analysis to see what the improvement is over OEM fluids!
PRODUCT QUESTION
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QUESTION:
I have a 1992 Ford 7.3 diesel. I have a new rebuild engine and I’m looking for a new motor oil. 15-40 is what in it now. Have read many opinions and would like yours about your oil. This engine is aspirated. Thank You Richard
posted by Wood Richard
ANSWER:
Hi Richard, we cannot comment on what other people say but we can tell you our fleet supreme are unique. There is no oil in the industry that provides the same level of wear protection and longevity. Also there is no other diesel oil that prevents stiction in HEUI injectors, without some expensive aftermarket additive. We think you will be very happy with it. Seeing what the oil can do is like cookies. No matter what we tell you, you cant tell how good it is until you actually try it.
posted by TRIAX Lubricants Admin

QUESTION:
Can I use this synthetic oil in a 2007 f250 6.0 power stroke with 215,000 miles. I live in Phoenix AZ., so which should i Use. Thank You Carlos
posted by Carlos Yado
ANSWER:
Yes, you can. We have many many customers using it for Powerstroke Engines.
posted by TRIAX Lubricants Admin

QUESTION:
Can this oil be run in a Yanmar Marine Engine ? 6lp-stp 315 24V diesel engine? Oil spec for the engine is 15w40
posted by andrew fishbein
ANSWER:
Yes, it can be used in marine applications that require a 15W-40 diesel oil.
posted by TRIAX Lubricants Admin

QUESTION:
Need to purchase Drum of 15w40 synthetic oil
posted by Quentin Cooper
ANSWER:
Please contact our sales department at customerserivce@triaxlubricants.com
posted by TRIAX Lubricants Admin

QUESTION:
Can you run this 15W-40 in engines recommended to run a 5W-40?
posted by Mark Heikkila
ANSWER:
The only difference between a 15W-40 and 5W-40 is cold viscosity, 15 vs 5. Technically, yes, you can run the 15W-40 in any heavy duty diesel application that needs a 5W-40.
posted by TRIAX Lubricants Admin

QUESTION:
can I use this in my gas 3.3l toyota engine?
posted by Stephen Bainer
ANSWER:
Depends on what the spec requirement is. We do not recommend this for small gasoline engines, as it is designed for heavy duty diesel.
posted by TRIAX Lubricants Admin

QUESTION:
Hello. I have a 2021 Kioti CK4010SE tractor, which is ready for its first engine oil change (2 gallons). Manual suggests "Tier 4 - API CJ grade above". What is your best -- preferably full synthetic -- oil for the job? Thanks!
posted by David Bloom
ANSWER:
Hello - yes, you can use this or our Agra Supreme 15W-40 which is specifically designed for tractors, low speed, high torque environments.
posted by TRIAX Lubricants Admin

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