I used to use a gallon and a half during every other fill up in my Stage 4 WRX. It raised the octane to around 94. Helped alot with detonation and even fuel milage.I use toluene to make my own racing gas when I can't get the "real" thing. Good stuff but be very careful with it. It's dangerous.
The problem is running cheap gas in the car. I believe the sticky build up on parts is less prevelant when using Premium grade fuels but, over the years, I've seen some montserous build up in a very short time.
I inspect the throttle body and MAF about once a month.
I don't know who makes the GM stuff.GM fuel cleaner looks an awful lot like Chevron Techron fuel cleaner... Chevron is GM related if im not mistaken...
I use that in my truck every now and then but who knows if it does anything...
I never thought of this condition before. You would think the fuel system was more robust. I wonder if this is a marketing campaign by GM for dealers to sell another service.Bulletin No.: 05-00-89-078B
Date: February 06, 2008
GM Fuel System Treatment PLUS Fuel Sending Unit Corrosion and Fuel System Deposits
The Four Benefits
Just pour in one bottle of the GM Fuel System Treatment PLUS into the fuel tank when refueling around each oil change interval:
Cleans - Sulfur corrosion from fuel gauge sending units.
Prevents - Harmful sulfur components from attacking sensitive fuel system electronics.
Protects - By coating metallic surfaces of the fuel system.
Removes - Engine deposits left from use of poor quality fuels.