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Maintenance / GL-4
« on: July 30, 2021, 08:08:15 PM »
I am confused. So I put conventional 80-90 GL-4 TO REPLACE MY M20 fluid AND GL-5 for the posi rear end with 4 oz of slip additive? Thanks
69 SS 350 4 SPEED.
69 SS 350 4 SPEED.