Posted by jase [108.162.219.87] on Saturday, July 18, 2020 at 16:08:18 :
In Reply to: Re: Lets talk about.. Vapor lock. posted by Jerry in Idaho [162.158.106.213] on Saturday, July 18, 2020 at 11:45:15 :
GM used to make a product called something like " Heat valve lubricant" I bought a can thinking it would be great for rusted fasteners. Cant say that it was... But GM seemed to think it was useful. They still may, and I have read that someone else makes something like it as well, but I can not recall the name.
Free-All, IS a penetrating oil I can recommend. It is in my mind the best hands down. It stinks to the treetops so plan on being up wind. I would not be surprised if that works on the manifold heat valve, if applied over time.