Anyone use them or believe in them? If so, what are you using?

 

Don't think of it as just an injector cleaner...it's a fuel system cleaner.

I use Seafoam. Read the can, and you'll find it's a good product for fuel system, air intake system, and before an oil change, and oil system additive.

 

as an occasional use it is fine, but a very good rule of thumb is if the manufacturer doesnt tell you to put it in (fill the blank here) then it doesnt belong in there and shouldnt be added to it. Seafoam is a great OCCASIONAL use chemical, but IME adding chemicals to a fluid can cause problems with seals and gaskets drying out or being attacked by chemicals.

 

Got it. Thank you