The only gas available with high octane is Cam 2, but it's leaded. I need to verify my knock as false. I want to run about 4 gallons. Will this harm anything being leaded? I can't find unleaded high octane any where. I'm at the point of adding 1 gallon of toluene to 4 gallons premium.

 

Lead will eventually destroy the O2 sensors and Cat. People do get away with using a little bit usually. If you must use it only put a bit in the gas tank, burn it up quick and fill the tank with good unleaded afterwards and you probably won't have any problems.

 

Just running 4gal for testing should not harm your Os sensors. Not as sure about the cats though.

Rich Krause

 

Just running 4 gallons you should be ok....if you make a habbit out of it you'll toast the O2 sensors and your cat(s) will become clogged fairly quickly...