Never played with a fuel rail cleaner however stp, Chevron and super tech injector cleaners never let me downWhats a good strong injection cleaner for a gasoline engine? there's alot out there, but not sure which one is the best,
i'd like one that goes into the gas tank, but something that attaches to the fuel rail is also something i'd use.
Used this recently worked well.Redline SL-1
One of the highest concentrations of PEA that you can buy in a store.
Berryman offers both in one can now.I usually run a tank of berryman b-12, then a tank of techron.
I usually do this before an oil change.