Buddies car just started smoking white/gray.

Anti freeze is clean
Oil is perfect
Oil cap has no residue

He said it did it before, but only on start up and only lasted a few seconds. Now he starts it and it is kinda bad when you first start and dissipates the longer it runs.

What are his options of what is going wrong?

My father said running too lean, and i agree with him because gray smoke if i remember correctly means lean.

I can't tell if its white or gray, but it doesn't smell like anti freeze being burned up and if it was oil, it was be a blue/black.

What are the options? I was also thinking valve seals. Or some type of seals going bad somewhere. I honestly don't think it is a HG because of the lack of evidence backing that theory.

 

check it out with a compression test, that will tell you the life of the piston rings and valves , or just a possible leak from the head gasket , remember that an engine expands when hot thats y it stops after the engine is warmed up