Customer Ratings & Reviews

Have not had any adverse effects or jelled fuel using this product. As for the other stated benefits?

Must have for any diesel during winter time. The extra protection of no fuel issues during winter is a must.

I also trust this product in my 2007.5 chevy 2500hd LMM DURAMAX in both summer and winter. Thanks.

This is a great product and I feel better when I use it. I believe I get better fuel economy but haven't checked closely enough to know for sure.

Seems to work as advertised. No issues.

I use this product in the winter and Amsoil injector & cetane boost in the summer. No issues what so ever.

Use this in my L5P Duramax and it's a perfect all in one diesel fuel additive

Great product

Just started using in my wife’s truck and it really shows in the cold starts.

It’s still early in the season so I haven’t had the chance to try it, but everything made by Amsoil seems to work like a champ, so I bought it to have just in case it gets cold enough for it…….and it’s getting close!!! I use my block heater to keep the engine warm and the moisture out of the oil and interior of the cab. I’ll be sure and write a review when the time comes!!!

tout simplement un incontournable en hiver Québécois!! Mon truck démarre à -30 sans être branché!!

Used it in the Cummins Diesel Ram and noticed the performance of easier starts in the morning. Ran a second tank through and upon closer inspection mileage increased. I'm a believer

I always used Howes meaner cleaner (that stuff is awesome), this stuff made my Cummins ever quieter than the Howe’s and it had the same mileage gain. It’s a little more expensive but the piece of mind that it’s being lubricated to the max is worth it.

I've been using Amsoil products for 23-24 years now and have never had a fuel problem since using the all in one

I have been using this in my Duramax for 4 years now it has proven itself to be a game changer for a diesel. I had a diesel work truck that did not get this treatment and it had all kind of fuel rail and injector issues. No problem at all on my personal diesel. Highly recommend!

I drove about 700 miles and did not see any difference. Maybe my fuel system is too clean being I only have 15000 miles since new.

Works as stated!

It works like it post to ran it in my other truck had 192000. Miles with no issues related to fuel

All-in-One reduces smoke at start up.

I firmly believe todays diesel fuel does not have the lubrication needed for the diesel high pressure fuel pumps. as to why we see catastrophic failure of the HPFP's.