I have a Welte "Original" piano using the high speed turbine pump.
I have searched the MMD Archives and found many articles saying
lubrication is important and one saying the original tube of
lubrication (which was attached to the pump) looked like thinned
Vaseline.  But I could not find any article which told the best
currently available lubricant to use.

What do people who service these pumps use now?  If it is not something
I can get at the local hardware store, where can it be bought?

Thanks,
David Sharpe
Western Massachusetts