I could not find the GM lube, at least not for a decent price. I see American Classic has it, but I also noticed they recently raised their price of it by 250%. I know they support this site, but I think a price hike of that magnitude is just plain robbery. So I got some steering box lube made in Australia, company name of Penrite. Really thick stuff, also not cheap. It leaked past my new sector shaft seal, but I got a genuine GM seal and put it in, replacing the cheapo one that came with the rebuild set from Chevy Duty. Now no leak at all.
