Customer Ratings & Reviews

The cold starts fuel additive works well i use it in my 2021 gladiator, 2001 dually duramax and my farm tractor it helps all 3 of them in the cold weather i highly recommend this product.

Really good for my diesel engine love it truck loves it

Noticeable improvement in acceleration. Recommend for routine usage.

Seems to have helped the tractor I put it in.

Love your products. Thanks

As always, best products around. It doesn't get better than this.

The diesel fuel additive works great, but it's difficult to empty the bottle in your fuel tank as the neck of the bottle is too small. You need a funnel so you don't tip the bottle bottoms up to get the additive out.

I have a ram with the 5.9 cummins engine. It had developed a rough idle and an intermittent clicking from the injection pump. I tried several diesel fuel treatments, but nothing really changed. I thought I'd give this a try. I treated a full tank of fuel at the clean up dosage. After driving about a 100 miles, the idle had smoothed out. After about a 1000 miles, the click was gone in the injection pump and mileage was up to about 21 mpg. I now use it at the maintenance dosage every time I fuel up.

Même s'il fait -30C ça démarre pareil pas branché, merveilleux! De plus je n'ai pas à badrer avec l'eau dans le diesel ou sa gélification... IMPECCABLE!! Incontournable en hiver! De plus ça prend soin de la pompe à injection!! Sans compté sur le petit surplus de puissance! Ram ecodiesel 2015 180 000km

Have been using the product for about a year now. Haven't had a gell up in any of my machines and gotten better fuel mileage.

Crossing multiple state lines and fuel quality in question this stuff will help with condition, lubricity and increase fuel efficiency.

Much needed here in Alaska

Much needed here in Alaska

Makes the truck run great

Raises cetane level so I get better fuel mileage. Removes water keeps from gelling. Use it in both vehicles. Duramax and baby Duramax.

I HAVE USED AMSOIL DIESEL ADDITIVE SINCE 2008 IT HAS WORKED WELL. OUR WINTERS CAN LAST FROM OCTOBER TO MAY

Have Not had any adverse affects from using this product and have not had any fuel gelling problems in severe cold weather.

Purchased my first bottle from a friend to try to deviate from Lucas additives. It woke my LB7 up and I decided to buy a whole case to have on hand. Highly recommended.

My engine runs quieter and I get 1.5 miles per gallon better fuel economy. I have been using it for years.

Noticeable mpg by 2mpg improvement and also a good peace of mind fuel system is getting the best liberation out there to keep parts happy and healthy longer