Hi Dan, not sure, theres no perceptable residue of grease on the bell housing or my garage floor. But then again 10-12 pumps over 1500-2000miles is not a lot even if it does throw it out gardually.

Suppose if I ever need to pull the motor out I'll find out then.

I think the grease provides a minute cushion between the metal parts and it really does stop all the rattling, I have not driven a Centa equipped car but I cannot fault mine at all.

It will probably throw its teddy out of the pram now and go bag big style now after that glorious review.