Customer Ratings & Reviews

Have not had an injector problem since using this product.

I have a 2022 Chevy Silverado 1500 3.0l Duramax with 48,000 miles on it. It was averaging 26.1 miles per gallon since new. At around 45,000 miles the MPG started dropping off and got down to consistently being in the low 25 MPG. The dealer told me it needed to have the fuel system cleaned and I bought a $75 bottle of GM’s diesel fuel system cleaner. Most of that ended up on the ground by the way; you have to use the little funnel that comes with the truck if you want to use a fuel can or an additive like I was doing. Anyway, that made zero difference, the MPG kept dropping. I decided to try the Amsoil additive, around $6 a bottle. The instructions said add 2 bottles the first time and 1 bottle there after when filling up. After the fourth bottle my mileage was back and even better than 26.1. I am now consistently over 27 MPG. It’s no joke, the stuff really works. I also use Amsoil for my engine oil, oil filters, and fuel filters. Prices are great and quality is second to none. Super happy with Amsoil products.

Works great, just wish they had a good top for pouring! Bought one but doesn’t always screw on and not leak

Works great in any diesel truck or tractor for winter or summer use always from better and cleaner

Love the product…believe it is very important for diesel fuel system and engine wear…but…the jug cap won’t seal properly and additive gets all over everything…what a mess 👎🏻

Product works as should

I keep it handy in door cubby of my 2019 Sprinter 4x4 and use it on every fill. Does 'seem' performance has improved on acceleration and power up hills. Feels trustworthy in that sense. After one month of use, have not yet seen any improvement on fuel efficiency (I've been diligently tracking that for over six years now).

I use this in both my GM diesel’s my 03 6.6 Duramax with 550000 miles and my 16 2.8 Duramax with under 1000 miles on a new engine. It makes a noticeable difference on the 6.6 with fuel economy and surge in the idle it also helps both in cold temp starts. Highly recommend this product.

I’ve noticed my Ram with 370,000 miles runs,starts a lot better.

I have been using this in my truck for years, and I believe it has helped prevent many of the issues that some 6.0 Powerstrokes were known for. I am a die-hard Amsoil user.

Purchased an old Case that had been neglected. Engine smoked at idle. Ran some of the injector clean along with fresh Amsoil oil change and it has improved dramatically.

Again, have been using this for several years. No problems car runs great 150K miles.

Works great,starts right up,runs smooth.

I try to get every last bit of life out of my trucks and equipment might as well use the best

Have been using this product for about a year now and it has helped my 2017 canyon extended my fuel filter by 3 to 6 months.

Since I live in Florida, I've had no need for the full service diesel fuel additive. Been just fine with cetane and injector cleaning. Appears to be just as viable as arch oil and Hot shot. But with the name recognition of amsoil. I would say my only real complaint is the lack of a dedicated and ideally refillable spout container with a measuring section. I make due with little 2 oz glass vials I refill occasionally.

I noticed an immediate difference when I added this to my new truck, I believe with the fuel/ DEF systems in new Diesels this stuff, as well as the stand alone cetane boost, are must haves. Great Product.

I add this to my fuel tank twice a year for maintenance. Works great!

This diesel fuel additive works great! I can certainly tell the difference in performance, and after 5000 miles, I haven't had a regen on my engine yet. I highly recommend this product to anyone with a diesel engine.

Makes the truck run great