ok...

i run Sunoco 94 octane and when warming my car up in the cold at the train station i usually smoke a cig (b/c i don't smoke in my car i smoke beside it) and my exhust smells just like someone sprayed a can of spray paint next to me.

is the car not burning fuel correctly in the cold?? does this sunoco 94 octane have more alcohol in it then other octanes?? has anyone else experienced this and if so what the heck is wrong?!?

thanks guys and merry christmas