I've heard from what I consider credible sources that the additives in automobile gaz are not good at all on camp stoves. The stove shouldn't give you any problem, but the fumes are (potentially?) very bad for your body. I've never heard of any problems with soothing on the pans using white gaz stoves before.

Where I live, major gaz stations sells something that translates to "environmental white gaz" for use in lawn movers and the like. The stuff is 95 octane "white gaz", but without additives. Much cheaper than coleman or MSR fuel.