[911monty]

[QUOTE=78F350;561190]Markus, Monty... Yes the cats have oil in them. I am fortunate to have 2 complete Boxster S exhaust systems in my storm cellar full of car parts. I will back-flush the primary cats, with water, then some waste Jet Fuel (like Kerosine), while I have the O2 sensors out. If they fail, I'll replace them later.


I'm not sure this is a good idea. Just a rich fuel mixture causes the cats to overheat and burn out. Wouldn't want to see the exothermic reaction that would happen with raw fuel in there. I've never actually heard of any cleaners for cats.


PS: Actually I did see a buddies 2006 chevy pickup with a bad supercharger install dumping raw fuel into the cats. They were bright red, almost white, and the undercoating was dripping from the frame rails. Towed his boat to my house to show me.....Amazing it didn't burn down in my driveway.