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Thread: Which gear oil?
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Old 06-25-2011, 05:43 AM
Ohio Hab Ohio Hab is offline
1984 C-10 383 SBC
Join Date: Aug 2010
Location: Holland,Ohio
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I use Lucas Gear Lube 80-90W , for the posi unit if the unit is an Eaton use the G.M. additive from your local dealer. The GM additive is recommened by Eaton, and as stated in an previous post Eaton does not recommend synthetic oil. Rear axle assembly should take 2 1/4 quarts if totally drained.
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