any first place to look?, could there be internal cracks in engine with antifreeze and oil mixing? Can i get the oil and antifreeze tested scientifically somewhere? before bringing it to dealer for the go around. Brought up the issue/smell at dealer when oil was being changed, and got the usual brushoff, of we don't see anything. I have had cars with cracked engine blocks(02 corolla), bad head gaskets, dealer warnings on engine blocks(09 civic) so i need to get ahead of the game here if possible, on the kia soul.