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Final drive fluid [message #230844] Fri, 22 November 2013 20:59 Go to next message
Steve is currently offline  Steve   United States
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Registered: September 2013
Location: East Greenville, Pa
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I plan to change the engine oil and final drive fluid tomorrow. I won't ask the question to start an oil preference discussion as I have made that decision. What I need to know is the specified weight for the final drive. If I didn't know any better I would use 80-90?

Original 3.70 as far as I know. Wish I had lower gears and limited slip. I run 4.11 possitraction in my old camper hauling trucks. Hills are no problem, MPG not so great.


1978 GMC Royal
Eastern Pennslyvania
1968 Chevrolet C20 396 Camper Special
1969 Chevrolet C20 Camper Special
1985 Buick Electra Park Avenue
1992 Camaro 25th Anniversary Heretage Edition Black
Re: Final drive fluid [message #230847 is a reply to message #230844] Fri, 22 November 2013 21:08 Go to previous message
roy1 is currently offline  roy1   United States
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Registered: July 2004
Location: Minden nevada
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Senior Member
Steve Adams wrote on Fri, 22 November 2013 18:59

I plan to change the engine oil and final drive fluid tomorrow. I won't ask the question to start an oil preference discussion as I have made that decision. What I need to know is the specified weight for the final drive. If I didn't know any better I would use 80-90?

Original 3.70 as far as I know. Wish I had lower gears and limited slip. I run 4.11 possitraction in my old camper hauling trucks. Hills are no problem, MPG not so great.

That should. Be ok but I used the thicker stuff ?-140 amsoil synthetic in my 370 gears


Roy Keen Minden,NV 76 X Glenbrook
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