Customer Ratings & Reviews

Works as advertised!

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.

Used it once and have no opinion as to how it did with helping my engine. May use it more but not really sure.m I should have noticed better results.

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.

Great product!

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.

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!!!!

Awesome product raises cetane

Same as above.

Product recommended by my mechanic years ago, boosts the octane for over the road diesel fuel, Ram 3500 Cummins diesel averages around 20mpg

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 .

Great stuff. Great price.

Already ran a bottle through my ‘98 Cummins 5.9L 24-valve at 3% and my truck ran great and strong!!! I’m just over 372,000 miles and it still purrs like a kitten!!! Runs and runs…….!!!!!

bien ajusté en quantité rend le moteur plus réactif....

I add this to every tank of fuel I put into my Diesel. I think its the best and most economical cetane boost on the market.

Noticed performance and power gain

I use this product every fuel up. Keeps my diesel running smoothly and reliably