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09-13-2014, 12:48 AM
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#1 |
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Registered User
Join Date: Jul 2014
Location: Frsico, Ca.
Posts: 40
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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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09-13-2014, 01:15 AM
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#2 |
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Registered User
Join Date: Jul 2013
Location: Phoenix, AZ
Posts: 348
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Re: 12 Bolt Differential Oil Change (66' Chevy C10)
I used 80w90 in front and rear diffs and tranny on my 60 k20. Don't need additives and don't need seals. You can use the same oil for tranny and diffs and SAE 90 is fine.
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09-13-2014, 12:01 PM
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#3 |
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Registered User
Join Date: Sep 2012
Location: Dallas, GA
Posts: 1,497
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Re: 12 Bolt Differential Oil Change (66' Chevy C10)
If that is the NAPA GL-1 gear oil, no--you cannot use it. It is not a hypoid gear oil and lacks EP additives that the hypoid gears in the rear end need. Pick up some GL-4/5 rated 80W-90 for the rear end.
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09-13-2014, 03:28 PM
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#4 |
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Registered User
Join Date: Jul 2014
Location: Frsico, Ca.
Posts: 40
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Re: 12 Bolt Differential Oil Change (66' Chevy C10)
thank you!
I will get GL 4/5 rated 80w90 for my 12 bolt differential. |
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09-13-2014, 06:25 PM
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#5 |
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Registered User
Join Date: Jun 2014
Location: fort lauderdale, florida
Posts: 511
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Re: 12 Bolt Differential Oil Change (66' Chevy C10)
when you step hard on the go faster pedal how many wheels spin?
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09-13-2014, 07:58 PM
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#6 |
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Registered User
Join Date: Jul 2014
Location: Frsico, Ca.
Posts: 40
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Re: 12 Bolt Differential Oil Change (66' Chevy C10)
well....when I punch the accelerator pedal I havnt done burn outs....
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09-13-2014, 10:10 PM
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#7 |
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Registered User
Join Date: Jul 2014
Location: Frsico, Ca.
Posts: 40
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Re: 12 Bolt Differential Oil Change (66' Chevy C10)
Last edited by mjs94080; 09-13-2014 at 10:11 PM. Reason: more info |
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09-14-2014, 02:42 AM
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#8 |
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Registered User
Join Date: Jun 2014
Location: Glendora CA -> Tampa FL
Posts: 587
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Re: 12 Bolt Differential Oil Change (66' Chevy C10)
I use this synthetic 80W-90 in all of the trucks (and cars) I've owned.
__________________
1966 C10 Short Fleetside 1988 Sportster, 2008 Street Glide Ken's 1966 C10 build "Red Ale" Follow on Instgram: @cv_performance https://instagram.com/cv_performance Harley Performance Parts: CV Performance (Harley related) Enjoying the ride! |
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