1. GM has used a variety of "grease" formulations, including oil-wetted sawdust in the upper bushing lube cavity. When it's me, I tend to use plain ol' white grease. No need for "high temperature" since the distributor is only going to get to 250F-ish at most, and probably not that hot. Oil temp might be higher, but the grease is held in the part of the distributor that's exposed to air to cool it.
2. Aftermarket cheap-junk distributors may have the upper bushing, and the grease well. Maybe they even pack the thing with grease. But some of those distributors AREN'T DRILLED between the grease well and the upper bushing. There is NO WAY for the grease to reach the bushing. Thanks, Communist China "Receive and Duplicate"; and thanks to the Communist Collaborators in the USA who can't manage to find these problems before they're released for sale.
3. Expect to have to fabricate a new plastic grease seal over the top of the grease well. Those used to be a fifty-cent part at any GM parts counter. GM discontinued 'em a long time ago. Now the Corvette specialty-houses get a fortune for the few remaining NOS units. The original is probably too old 'n' brittle to remove without shattering.
|