12 Bolt Differential Oil Change (66' Chevy C10) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mjs94080 · 09-13-2014, 12:48 AM

I have a 1966 Chevy C10.

It has a 12 Bolt Differential.

*What oil do I use for the oil change of this 12 bolt Differential?

*Should I use Napa SAE90 Mineral Oil? ( I used SAE 90 in my transmission oil change).

*Also how can I tell if it is a Posi or Non-Posi?

*Do I use a GM non-slip additive?

*Do I use a sealer on the gasket?

I DO NOT KNOW ANYTHING ABOUT THIS. "PLEASE" ANSWER "ALL" QUESTIONS. Thank You!

09-13-2014, 12:48 AM	#1
mjs94080 Registered User Join Date: Jul 2014 Location: Frsico, Ca. Posts: 40	12 Bolt Differential Oil Change (66' Chevy C10) I have a 1966 Chevy C10. It has a 12 Bolt Differential. What oil do I use for the oil change of this 12 bolt Differential? Should I use Napa SAE90 Mineral Oil? ( I used SAE 90 in my transmission oil change). Also how can I tell if it is a Posi or Non-Posi? Do I use a GM non-slip additive? *Do I use a sealer on the gasket? I DO NOT KNOW ANYTHING ABOUT THIS. "PLEASE" ANSWER "ALL" QUESTIONS. Thank You!



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