Wait... So Chevron is bad?
lol. no. were not talking about the gas. and only guessing about the additive bottle.
just to spite this thread i threw in a bottle of gumout regain yestserday with a full tank of gas. i do a bottle of some additive like that every 10k miles. it was weird because my engine didn't blow up. oh well.
just to spite this thread i threw in a bottle of gumout regain yestserday with a full tank of gas.
Yes, I had the same idea. That's where the Deposits came from in the first place. There is no where else for the fuel making the deposits to come from. :iono:Some believe there will be fuel system cleaning fom the pump to the injectors.
After that, deposits in the combustion chamber and valve heads will be reduced.
A bit of backwash may help with the backside of the intake valves. But prob not.