The Stovebolt Site Forums The Shop Area General Truck Talk Cornhead grease?

Long ago (around 2005) there was a discussion of this on oldGMCtrucks.com

The conclusion was that Penrite Steering Grease was the equivalent of the GM part number: Part # 1052182. This hard to find, but it is available from a few USA vendors.

I think that a member also found a GM reference to 00 grade grease being the spec for roller-bearing steering gear boxes.