Dirtyd0g said:I prefer GM syncromesh fluid.
Joisey Jim said:I've had great success over the years with Redline MTL + their synthetic friction mod (expensive at $8 qt, but very good stuff). My '90 SC at 246,000m had no trans problems or noise and, my '93 with 205,000m is the same. Currently Redline recommends their D4 synthetic ATF, probably due to better cold weather shifting; but I had no problems with the MTL gear oil and I think the protection is better.
Jim.