Slant clean-up and oiling question

I don't use much gasoline at a time, catch it all in a pan, and it doesn't linger long. After mixing with the gunk, it is more like oil than gas. Nobody in my family smokes or plays with matches, and I don't think we have any incandescent bulbs left (stupid laws, ...). More often I use diesel (from my M-B). It is safer and actually works better since it lingers longer.