Quattro Group I can't find the thread on Redline TRans oils talked about so I'll ask a quick question. Can I get by using MTL 75w/80w GL4 gear lube in a87 5000 5spd trans. instead of the MT 90 75w/90 GL4 gear lube. The only stuff I can find is the MTL 75w/80w. Thank. Pat Korach Kirkland, WA