Cat Man HHR

Whopper your correct in products he can use. I mean use one, the stuff is close to home.
Never used that WD product or Pro Lab.
Not a fan of PB blaster. It works OK though.

J W Davis

I have used about all of them at one time or another, but for the past several years I have "AERO KROIL" the oil that creeps. Made by Kano labs. This is the best I have found and use it on anything that is rusty or baked on like nuts and bolts on my "Cat Engines" needing a new turbo. Cat Man knows what I'm talking about, I just spray a little in each bolt every day for a week before and like magic bolts come right off like magic. It is very good lube and makes the rusty cooked on crud just go away.
Give it a try, seems to work better than anything I have ever used.

Cat Man HHR

Thanks for the review.
Not many people know or heard about Kroil that I know of.
It is expensive.
I repaired an old fork lift with a 6 cylinder Continental engine with stuck valves. I mean they were stuck !
Continental is a flat head engine.
Took the head off and used Kroil on the valve stems/guides and freed them up.
Put it back together and I was good to go.