Mystery film on cam lobes

64physhy said

I just bought a rebuilt 340 long block & noticed the cam lobes are covered with a waxy substance. It’s dry & kind of waxy feeling. It has been sitting for a while since the rebuild, so I’m thinking maybe it’s some kind of cam assembly lube that dried out or something. Is this a coating that’s still good, or do I need to pull the cam & clean the lobes & put fresh assembly lube on it?

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Can you put heat to it and it melt some or liquify ?
Yeah it's just old cam lube. Schneider still uses it, some others too. Many have gone to the red stuff that is very viscous and the other like light weight grease...then theres Lucas which has a nice green assembly lube like comps I like as well....then the old cosmoline type that Chrysler used/s... lubriplate napa...lol...sta-lube moly grease ...I think I've used it all...theres a few more too I'm forgetting..
You could just add more to it...or like you said spray it off and start over.