Does the dealership(s) offer any preventive back side valve cleaning knowing it's a potential later problem? Does any third party
shops offer this service? I know about CRC spraying but concerned about initiating codes with MAP sensors etc.
Hey Toad, where do you spray it into, pull air filter and spray from there? How much of a can do you spray over what duration of time? Is the SFS just idling? Spray it and shut engine off while spraying to let it sit on valves for awhile? Hot engine or cold engine? Thx.