Starter motor gear lubrication

[Philippe-J.]

On dismantling my starter motor for a deep inspection and cleaning, I found that the internal gears were lubricated with a sort of (old) oil.

Shouldn't I use a (new) grease instead?

[Bob.]

This extract from a 1973 Lucas Workshop Instruction on the "Roller Clutch Drive Assembly" may help.

[Philippe-J.]

Excellent Bob, thank you!
I found the info about Shell SB2628 that I needed. It's a "polybutyle Cuprisil (PBC) corrosion resistant grease". Sounds better than the oil I found. However a quick search on the Internet shows it is not easy to find.
BTW this document contains a simpler explanation than the workshop manual about the way the starter motor works.