Steve wrote:
Hi

I gave my wife some Castrol LM grease to put on the gears inside an old
(60s/70s) sewing machine. Unfortunately some of the gears are plastic.

The questin is, will the (presumably) petroleum based grease damage the
plastic?


I doubt it.

If so, what's the best way to clean it off without further damaging the
plastic?

Soak in alcohol.

Thanks

Steve