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Thanks for your generous offer, but I don't want to take advantage of you, so I'll decline. 2nd and 3rd had synchro cups, and my 2nd has gotten a little slow. I understand the GM fluid has a friction enhancer that will help the yellow metal shoulder and cup "hook up" a bit more aggressively. I...

My 35 Pontiac calls for 90 wt winter, 160 wt summer in the transmission. Can I use 85/140 Synchro lube without problems? I have read that GM Synchro Transmission Fluid may help my occaisional 2nd gear synchro clash. Pulling the trans for rebuild is a genuine PITA. If I can't find an easy fix...