Wally's SuperTech, Costco's Kirkland and Amazon Basics FS oils are all from Warren distributing and are basically the same oil. It is good stuff, no problems with using it. The Project Farm guy tested them all and the results were good. I'd have no issues with using any of them.
I'm having a hellauva problem with warped front rotors. New rotors warp within about 2 months. Car is an 04 Subie Outback, it's slow AF and not driven aggressively, but the rotors warp after some knucklehead cuts in front of me and I have to get on the brakes hard to avoid hitting him. I have...
I have an old 1988 IROC Camaro, it's a G80 and G92 option car which means it has the Aussie Borg Warner 9-bolt differential with 3.45 cone-type posi. I've been running Redline 75W110 in it, which supposedly has LSD additive already. I do not put in anything additional. It runs just fine.