Aids is helping keep diesel fuel system clean and in cold weather starts( below 20 degrees F)
Bottom Line
Yes, I would recommend this to a friend.
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4 star rating
Hopefully Making the Difference
By 
ADAM, 
a 
Verified Buyer 
from 
Santa Fe, NM  
on 
January 24, 2026
I keep it handy in door cubby of my 2019 Sprinter 4x4 and use it on every fourth fill.
Because I trust Amsoil, I believe this to be a positive contribution to my vehicles performance; but there is nothing direct tangible about this.
I really haven’t had a chance to really try it out because of work it I had originally purchased thinking that I was getting an injector cleaner. I will say everything that I’ve purchased from Amsoil has been above and beyond so I’m sure that this will be a good investment.
I have used this fuel additive since I purchased my truck new. Fuel mileage and power is not the reason I use it. I use this additive to reduce re-gen of the DPF and it works great. In comparison to friends with the same motor (6.6 Duramax) I rarely have re-gen. Great product at a great price from a trusted manufacturer. Very happy with my results.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Been using Cetane booster for decades boosts gas mileage
I use a combination of Cetane Boost and Diesel Injector/Lubricator additive. They are great products (and needed with the ULSD fuel and CP4 pumps). Every fill up gets an appropriate addition of these Amsoil products. I see an improvement in mileage with the cetane boost. I have yet to have any internal pump or injector issues, so I hope the cleaner/lubricator is also working.
However...EVERY time I pour from these jugs, the runback and leaks are horrendous. C'mon AMSOIL, do better. I would love to have your execs have to pour some of this stuff out to see how bad of a mess the jugs create.
I’ve used this for years in my 97 F350 7.3l power stroke. With a electrical fuel system, intercooler, upgraded injectors , this has provided the confidence the truck is getting the best considering how diesel fuel quality is going down.
I add the cetane as I know the performance of the diesel engine is demanding. Don’t know if I really notice any difference, but I have always added it and my truck is 21 years old and does great.
Bottom Line
Yes, I would recommend this to a friend.
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4 star rating
Slightly increased fuel mileage
By 
ROBERT, 
a 
Verified Buyer 
on 
June 13, 2024
Good product. Container could be better lid leakage if container tips over.
Cetane boost works well definitely feel a horsepower increase and acceleration and im using this in a M35A2 military truck along with the signature series diesel oil runs flawless great product
The Cetane boost really works. I see much better engine performance . I can see a big difference when I need all my horse power I can get from my diesel motors
My ‘98.5 Dodge Diesel runs so much better with a boosted fuel. I only boost it 3 points at a time, but I can seriously hear the engine smooth out and the power is much better!! I’m not a “Hot Rodder”, but I want my truck to MOVE when I put my foot into it……and it does!!!!
I've gained fuel mileage and performance , 2000 7.3 diesel 337,000 miles and going strong. I use all amsoil products on multiple pieces of equipment, cars,trucks, tractors, sleds,compressor, quads,bikes, the quality and performance has been unmatched for years .
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