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Old 04-21-2017, 12:03 PM   #1
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Join Date: Apr 2017
Location: Houston, TX
Posts: 3
Oil Change for Manual Transmission and Differentials

Unless I totally missed it the manual doesn't show a quantity of oil needed for the differentials, transfer case, and manual transmission when changing the oil, only to use a GL-5 90W.

Anybody done this service and could enlighten me how much oil I need to be buying? I have a '78 GMC K15.
1978 GMC K15, Sierra Grande
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