I have never been impressed with additives for my gasoline powered vehicles. I have run through 1 tank full with Diesel Kleen in my diesel 3/4 ton. The engine ran much smoother and I noticed the gas mileage improvement. Going to measure to see how much improvement but maybe enough to pay for doing the additive with every tank full.

I bought this product over the weekend after reading all about online and decided to give it a try I have always been highly against additives. But after reading others experiences I decided to give it a whirl. Put it in Sat night didn't drive Sunday. Monday I started truck and headed to work and within 5 miles I could already tell a huge difference I had not realized how much I had lost over the years it even seemed as if the engine was quieter. I can't wait to see what a difference a couple of tanks through my truck will do. Highly recommended. I didn't even have any issues. Well I thought I didn't. But I had to replace injectors about 20000 and they were horrible so I may run a tank through and pull one just to see difference if any. This product has impressed me. Will be buying more. Sorry for rant. Thanks.

I stopped using the product during the summer thinking that since I am running the truck on highway that I won't need to use it. Boy was I wrong I recently I was experiencing a sudden lifter knock. I put the silver bottle in a let it set in the tank blended while. My mileage prior to putting in PS I was at 15.6 now I am average 20. PS I also follow the speed limit.

I love this stuff. My truck always seems to run better with a dose in the tank. This would be a five star review were it not for the fact that these bottles leak horribly when laid on their side.

This stuff really works. I did an experiment to see if it helps with anything. I filled up the tank with regular diesel and the car had a bad idle. Also the exhaust was stinkier smokier than normal. After putting some of the silver bottle PS, the idle is smooth and the exhaust no longer stinks. I don't know if it makes my mpg better because my odometer does not work. In any case, I believe the product is worth the cost.

Ever sence I bought my Ford truck I been using Diesel Kleen and had no problems with the truck, it really adds power on long trips and I see an improvement on my mpg.

I've run diesel kleen in every tank since I bought the truck, gives me a peace of mind about the injectors that were replaced only 40000 miles ago.

My f250 powerstroke was going into regen doing exhaust clean once a week,started using Power Service diesel kleen and the truck has not done an exhaust clean since. It truly is a great product.
Kenny Budden

My car has officially reached a point where I am having minor problems, most of them from needing a good cleaning. However, when I put this additive in and it solves pretty much most of the problems. The additive is fairly cheap, and also gives a good 2-3 mpg increase. I am down to 36-37 without this stuff, and most of the time with this additive, I can achieve 40-41 mpg.

Just got my truck and because of the problems the diesel fuel is causing to older vehicles I started using Diesel Kleen + Cetane Boost. It is amazing to say the least. Easy start ups, smooth idles and 20 plus mpg. I'll use the product every fill up, thanks for a great product.