I had a 29 truck I was going to restore and poured Marvel Mystery
oil into the cylinder walls and on the valve train to keep everything free.
When I sold the truck on ebay to a man in Canada, it was still turning free.
Good stuff.
Another great product is PB Blaster. It uses some type of
enzyme process to eat rust and make it easier to unbolt stuff. If I have a job
to do that involves some parts that have been married for a long time, I plan ahead
to soak them in this stuff.
Tom Taylor
55 Dodge
(recently experienced the reason that brake systems went to
dual circuits. It is a sinking feeling to push a pedal to the floor. But,
having that hand brake is a life giver.).