Quote:
Originally Posted by Purdy Swoft
Kroil , preferably silikroil ! A thin penetrant works best for me .
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Yep. Kroil is purpose-made to free stuck parts due to rust, like a stuck piston & rings. It's a very high quality product and you will find it in shops of professionals that know.
I suggest the non-aerosol version since the Kroil slowly (more than one year) attacks the aerosol can seals and bleeds out the propellants.