| [GMCnet] Cooked my tranny [message #356716] |
Mon, 13 July 2020 10:05  |
fbhtxak
Messages: 191
Registered: April 2006
Karma:
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Senior Member |
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Jim,
Re final drive lube oil temp: Like you, I was never concerned with it until
I instrumented it and began to monitor it. With a GM 3.42 gearset, I see
temperatures similar to yours under similar conditions. Thanks for posting
your observations. They are the first I have seen for final drive temps. I
consider yours to be a sign of reasonableness for those I have observed for
more than 25 years. I have done nothing but change the lube at the GM
specified 12k mi intervals during that time. I acknowledge that the 12 K mi
interval is probably excessive with modern lubes.
Fred Hudspeth
Fred Hudspeth
1978 Royale (TZE 368V101335) - Tyler, TX
1982 Airstream Excella (motorhome) - Cooper Landing, Alaska
Message: 3
Date: Sun, 12 Jul 2020 11:30:08 -0700
From: James Hupy
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Cooked my tranny
Message-ID:
Content-Type: text/plain; charset="UTF-8"
... The final drive? Another matter indeed. Only 2 quarts
of gear oil in there. And lots of heavy loading. That computes to 250?
running down the flat n level, Approaches 300? with any hill climbing. I
use Synthetic Gear Oil in it, and those temps concern me a bit. Been that
way for years, though. No failures yet. Before the gages were hooked up,
never thought about it much. Guess all the gages achieved were to give me
something else to worry about driving down the road! Ah, such is life, I
guess.
Jim Hupy
Salem, Oregon
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