With the cost of modern diesel injectors, adding a bottle of this every month or so is a no-brainer. It's easy to put your trust into anything Amsoil puts their name on.

gave 4 because just started to use. Seems really good for now and if it is like their other products I won't be disappointed.

I gave this a try for my 1997 Ford F350 Powerstroke. Well I can tell you now it's like running on steroids. My truck acted more responsive and had quicker acceleration than before. I have tried many types in the past and only Stanadyne or redline came close. Definitely recommend this product. As for the injector cleaning? I think it's working bu but all I can say is the truck runs much better now and they have the original injectors in there. 240k miles. Definitely try it out!

I wanted to run something for cleaning my injectors. I also was concerned about the level of cetane in the diesel fuel straight from the pump.

So no one told me about ram 2500 having a second thing in the fuel tube. I spilled and let me tell you this stuff is potent. Smelled up an entire campground. When I finally did figure out the fuel tube, product did it’s thing.

Presume doing exactly what its designed to. Since I don't really feel any difference between today and 5, 6, 7 years ago, gotta believe it's keeping fuel perky and everything else clean.

I always use every time i do oil change and work perfectly

Works well .. friends like it too after I gave a bottle to them

You can definitely feel the difference when you use it, I like it 👍

Is what my mommy used to tell me, and like a good cup of coffee for a pick me up. 2016 Chevy Colorado Baby Diesel towing 6000 lb camper like a bad boy.

Very effective in all diesels. Noticeable difference when you follow directions on bottle.

Have used it for 4 fills, have had no issues

There is no real way to know how well it is working. However, the Amsoil reputation is enough for me .

I’ve gained a 10% increase in mpg from the on board computer and have hand calculated it to a 9% increase. I have a 33 gallon tank so I pour half the bottle in with each fill up, works out perfectly.

Been using this product for about a month now. I has increased my MPG by 2 MPH. Less smoke, and more throttle response as well. Seems to be working as advertised. Happy with my purchase!

A company that still believes in quality of products and performance. Amsoil stands behind its products and customers.

Using in a brand new Gladiator Ecodiesel, adding at recommended dosage for maintenance. I can’t say I have noticed any difference in performance at this point as it is to early. I want to stay ahead of any issues. I may use a heavy clean dosage every fuel filter change out going forward as well.

Have seen a few mpg increase. Although small the truck runs smoother and quieter.

I had just came back from a trip pulling an RV with my 2014 RAM 3500, 6.7 Ltr engine, and got (average) 9.8 miles per gallon of diesel fuel. Next trip, same route, same RV, and my 4500 mile round trip, upped the fuel mileage to 12.4 miles per gallon. Driving with no load in city and highway, my mileage is steady at 23. One longer trip on the freeway was at just under 29 MPG. Alas, now I've parked my truck as fuel costs are too high to take RV vacations.

I have used the diesel injector clean & cetane boost as well as all in one in the winter, both products work great, improve performance & fuel mileage. I also use Amsoil lubricants in just about everything we own, never disappointed. Great Products!