GM used to sell manual box lube but quit a few years back. It was always much heavier than 90 wieght. Some folks say that standard weight grease will not "flow" into the right places in the steering box components. (There is a term that I can't remember for this.) Penrite is the stuff that most folks say is the best, but is made in Europe and hard to find. The other often recommended product is John Deere Corn Head Grease. I got some at local dealer Deere Dealer for about $3.00 a tube. Seems to work fine.


1950 Chevy 3100
261, 4 speed
Purchased 1977

1964 Pontiac Lemans Convert