I add 8 ozs. to 15 to 20 gallons every 2nd or third top off, average 2 mpg increase, Truck starts faster and runs smooth, Started using at24,000 miles, 71,000 currently and runs like new. Will continue to use.

With the price of diesel I have been doing 20 gallon purchases and this size is perfect for that. Love the mileage I'm getting with this product.

I've been using Amsoil since late 80's, it has been great for my vehicles.

I’ve Used AMSOIL’s Diesel All in One Fuel Additive Along with Their 10W-40 Severe Duty Full Synthetic Engine Oil for my 2017 Ford F-250 6.7L Diesel. I’ve used the Diesel Fuel Additive for about a Year from August 2021. It has not shown any improved Fuel Economy Although The Engine Runs Well on the Additive. I changed All Fuel Filters before and after using the AMSOIL Additive. Both of the prior filters were super clean upon the change. These were changed Early by a different shop with OEM Filters considering I still have an Extended Warranty on the Engine Components and Transmission until at least 100K miles. Right now it has about 70k. I purchased it when it had 55k miles on it. I changed the fuel filters bc I did not Trust the Dealership, Any 5-Star Ford in the DFW, Texas Area. It seems the Diesel All in One is at least matching any other additive on the market. To me, Un-proven any long term benefits.

I've been using the all-in-one for a little while now and have seen a positive difference in the way my truck runs.

I try to run an injector cleaner on a regular basis. Amsoil make a superior product compared to the others on the market. Very affordable if your a member

I usually use howes additive, so I wanted to try some new stuff. This was one that I can feel a difference. Seemed like it got an extra pep to when accelerating.

Stay on track with preventive things and this is one to include

I’ve been using this instead of diesel 911 for three years now and never had another fuel gelling issue. I add this to my bulk off-road diesel tank and run it in my tractor, dozer, plow truck, excavator, chipper and generator. Temperatures sometimes dip to -20f and I’ve never had a fuel gelling issue. I also thinks it’s important to add for lubrication properties because of the new ultra low sulfur diesel which is ‘dryer’ and can scar injectors and fuel pumps.

My bmw 335d was throwing injector code ..added this magical liquid and its all gone and car runs better than ever...if u want a BMW m3 killer get the 335d and amsoil

I love this stuff. It really helps protect my equipment in a full 360. It even help protect when it gets a little cold… 10°. It really is a dump in and don’t worry at all, all in one that actually does what it says it’s gonna to do. I will be using this till I go to the winter anti-gel protectant from Amsoil witch also works great and has protected my equipment down the -30. Thanks for a great product like all your other products.

We use this in all our diesel truck they run smoother and get better milage.

this is a good Diesel treatment truck rums better gain 2 miles per galon

Cummings are known for noise. I noticed a great reduction in the noise level immediately.

This product keeps your engine clean for best performance.

This stuff works great and worth the money without question!

After a few hours of adding to the fuel I noticed that there was hardly any smoke out of the exhaust when cold engine on my farm tractor. Also seems to run smoother.

I used this during the crazy texas winter freeze and I was the only one that didn't have my diesel freeze up. I told several neighbors about it and they didn't believe me until their diesel gelled up and froze. Then they seen me driving around like it was just another normal day.

2000 Ford 7.3, All-In-One, Does All I Could Ask For… Keeps me running smooth, improves fuel mileage over running without.

Very quick shipping and great price. Glad to find great products to keep my 2021 Silverado 3.0 duramax maintained.