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Need To Change Rear Diff Lube
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Question
bowtie_pasta
I checked the RPO code and I have the G80 rear end. Do I need to use an additive or can I just refill with 75W-90 synthetic? Also, how many quarts should I buy?
Do I need to buy a gasket or can I use RTV? Which RTV do you recommend?
Thanks GM Techs!
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