Hot Shot's Secret Everyday Diesel Treatment 16 oz. Squeeze Bottle 2 Pack, 6-in-1 Diesel Additive - Injector Cleaner, Fuel System Cleaner, Fuel Additive Boosts Cetane

I use this on every other fill up in my truck. I run a Dodge Cummins, I notice that it runs a little quieter with 2oz of Hot Shot in it. Definitely a great buy, I buy this regularly.

Works great. Happy with Hot Shot Secrets products! My car has 228,000 miles on it and this is part of the reason why.

I use this in my dump truck. It’s an 84 Ford L9000 tri axle with the Cummins M11. I try to do anything possible to stay on the road. I like the measurement cup that is built in. It does seem to help my old motor run a little smoother. I notice more of a change when I add 2 cups per 25 gallons personally.

Firm believer in this product for years. Just don’t let them fall over after opening up. They do leak and stink.

delivered fine, but when i try to close bottle it is difficult to make it leakprood. So if it falls over it leaks.

Super surprised on how quiet my truck is now. I have a full header back 8” exhaust. When going through a drive through I don’t have to turn the truck off to hear the order speaker.

I use this in my LB7 and it runs amazing. I use this to keep the fuel lubricated and wouldn’t use any other product!

Several sites recommend today's diesel engines have a fuel additive for engine care and longevity. Other claims state increased fuel efficiency, but I have not seen this in my 6.6L engine.