I've ungreased and un w-d 40 d more coils than I can count. Sometimes I get the feeling at one time the factory might have tried some kind of lube on them because I find it in coils that look like they were never apart. Every one on the machine. I know it goes against everything we know now, but I've found that black gunk in too many to be just random. I'm talking 50s and 60s Williams.

But anyway after taking them apart and cleaning it all off, I find plungers, stops, and sleeves that look like brand new and now work that way.

Apparently Williams did use some kind of graphite lube on their solenoid plungers.

New $#!T has come to light!

Usually it's the plastic spool that shrinks a bit isn't it?

I'm still trying to figure out the correct graphite grease to use as a replacement on older Williams coil plungers.

Perhaps Steve Kordek took that knowledge with him.