Contour Enthusiasts Group Archives Forums General Troubleshooting gas leaking into the oil

Um thats next to impossible. Your gas gets pumped from the tank through the lines and to the injectors. There is at no point any contact to any areas, which would allow it to mix with oil. Unless you have some seriously bad piston rings in one or more of your cylinders, which allow so much blow-by that the mist that is sprayed by the injector(s) goes past the piston rings and into the crank case, but that would mean that your spark plug(s) where not firing and the gas was never being ignited. If your piston rings were bad in one or more cylinders you would also have no compression in that paticular cylinder and your truck would be missing like mad, which would be very noticable on a six cylinder. It's pretty hard for all of your piston rings on one or more of your piston's to go out instanteously at the same time while driving as well if it broke down on the road.

Unless of course for some reason you accidently filled your truck up with 110 octane fuel in which case that stuff has a very strong and distinct smell to it, which does make your oil smell like it. However that doesn't typically happen unless your run that fuel consistantly. My small block 350 smelled like that when I tore it down for a rebuild.