Got what appears to be a light amount of white smoke or steam coming from my engine once in a while.
I've got a 1986 Nissan 300zx and every now and then after driving a while I can see a very small amount of white smoke or steam coming from under the hood. I pop the hood open and it looks like its coming from the drivers side exhaust manifold. Also looks like something has been burning off it cause it looks like there is a liquid of some sort on it, looks like maybe oil? It's dark and a little gunky lookin and looks like some fresh moisture on there now. So is it leaking oil slightly or what is my problem and how big of a deal is it? Am I gonna screw up my motor anytime soon if I don't get it fixed soon? Thanks in advance for all the help.