rebuilding · FF-0131

What is Cosmoline and why is it on a new old stock engine block?

Steve describes Cosmoline as a wax-based preservative put on machined metal parts to protect the metal and finish in storage or transport; it has to be cleaned off before use. Ed adds that it kept salt water and corrosion off parts shipped overseas, and that he does not know of a chemical that washes it right off.

Expert

Steve Coppock and Ed Smith

Evidence

expert attributed

Component

Cosmoline preservative coating

Applicable scope

New old stock machined engine parts in storage or shipping