Customer Ratings & Reviews

I’ve tried all them all and the Amsoil Diesel All-in-one is the best daily diesel additive on the market, today!

This is a great product for all seasons. I use it in all five of my diesel motors…Kubota, Bobcat, Ford and I’ve never had any fuel issue problem.

Keeps my 6.7 running like a charm

This product has kept my Kioti Tractor running great year round. I use Signature Series oil for the motor and this for Diesel ,both of which have kept my Kioti running like new .

I bought a Kubota diesel tractor. It's the first time I've owned a diesel, so I have a learning curve. I was nervous about it running in the winter, since it will be my main method for blowing snow. I've been a loyal Amsoil customer for years and I had remembered seeing diesel related products in the catalogs. I did quiet a bit of homework comparing other diesel related products. In the end it was a no brainer for 1st time diesel owner to use the Amsoil All-In-One. It took care of everything I was concerned about with the upcoming winter/cold. Thank you Amsoil for providing the best products in the market!

This product has never failed to provide protections during our severe winter temps here in Montana. I have never had a diesel fuel problem while using this. Also, there is a distinct better performance on my diesel when using this. Better mpg and more power.

Just started using this year with my LML duramax. I trust Amsoil to be above & beyond with their products.

Love the Diesel all-In-One to keep the engine purring and clean fuel for safe driving

Love this in my diesel truck with Cummins engine keeps it from gelling up and cleans and provides ultimate performance

Reduced the soot on my loader arms significantly while using red dye fuel.

The title says is all. A treatment per tank keeps the service technician away.

This product has increased my fuel mileage. We had a recent cold snap down to 16 degrees. The fuel was still fluid and no gelling took place. My Ford runs smoother and it accelerates much better when I have this on board. Much better.

It seems to make it run cleaner less smoke

Keeps my Diesel fuel from freezing Gelling since I switched over from the old (911) plus the all in one keeps the injectors clean , so the engine doesn't smoke upon first start up eary in morning after sitting all night and after sitting all day at work. Use the Amsoil Diesel fuel treatments.

I use All In One in my Duramax at every fill up. I've never had to replace an injector or fuel pump, and my mpg is higher than average according to a Duramax group. Coincidence? I think not.

I have use this product for 3 winter now and it works great.

Putting a li'l extra goodies in the fuel tank will keep my Duramax running strong for years to come!

Recently I just drove to Wyoming from Arizona and back on a hunting trip. I've made this trip several times in the past. The trip varies in elevation from 4500 up to 11,000 ft. On this trip I started using the Diesel All-In-One and I saw significant increases in power and fuel economy, especially in the higher elevations where my truck used to struggle a bit. Great product and works as advertised!!!

Little bit more mpg and piece of mind the injectors will last longer.

To early to tell. We’ll see.