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06-27-2010, 05:08 PM
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#1 |
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Registered User
 
Join Date: Dec 2008
Location: New England
Posts: 661
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Differential Cover gaskets and gear oil?
Any suggestions on either? Should I just go to the local auto parts place and tell them I have a 12 bolt rear and a Dana 44 front and go generic? Any place online you could recommend and what gear oil should I use and how much for each differential?
Thanks again all, Patsy |
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06-27-2010, 07:00 PM
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#2 |
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Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: Differential Cover gaskets and gear oil?
you could just use RTV.. that's what my daily driver required from the factory.... or you can go basic paper gasket with some rtv wiped on both sides
I used Lucas synthetic gear lube to quiet the posi "shutter" as well... 90W should work. Can't remember how much they take, about 2-3 quarts each... just fill it until it reaches the fill hole.
__________________
The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" Last edited by msgross; 06-27-2010 at 07:01 PM. |
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06-27-2010, 08:57 PM
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#3 |
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Watchin the rust grow
Join Date: Oct 2008
Location: Western Nebraska
Posts: 950
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Re: Differential Cover gaskets and gear oil?
I just use RTV, no leaks. It took 2 bottles to top mine off.
__________________
1979 Chevy K10 (H/D Front end) - 350 w/ Holley Truck Avenger, Weinald Intake manifold, headers, bored .060 over, mild cam, Built up TH350 (TranStar Shift kit) with a part-timed NP203 t-case SOLD ($3,000) 1997 Chevy Silverado 1500 - 4.3 vortec, extended cab, 21 highway MPG, stock. "Red" SOLD ($3,000) 1987 Toyota 4wd Pick-up - work in progress, future DD SOLD ($1,850) 1998 Dodge Ram 2500 Cummins 5spd Quad cab - old 12 valve with some work done  2004 Chevy Silverado - Black, 4x4, 5.3L, stock for now Underneath that rust is a heart of gold
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06-28-2010, 12:02 AM
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#4 |
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20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,664
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Re: Differential Cover gaskets and gear oil?
Any synthetic 75W-90 should be fine. I use Mobil-1, have also used Redline. Be sure to use proper oil and/or friction modifier with clutch-type limited slip.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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06-28-2010, 09:24 AM
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#5 |
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Registered User
Join Date: Dec 2008
Location: New England
Posts: 661
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Re: Differential Cover gaskets and gear oil?
I think this is just an open rear w/ 373s. I'll recheck I all again but I think I remember being disappointed because it wasn't posi. Great input guys thanks alot!
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06-28-2010, 03:15 PM
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#6 |
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Registered User
Join Date: Apr 2000
Location: Chester County PA, USA
Posts: 1,228
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Re: Differential Cover gaskets and gear oil?
I use 80W 90. I buy it by to 5 gal pail so i cant tell you how much exactly it takes.
I also use a paper gasket and RTV on the cover side. That way if you take it off any time soon the gasket will stay with the cover and you can most likely reuse it.
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72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania |
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