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Rear axle gear oil temperature

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Old 05-17-2012, 11:23 PM
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Default Rear axle gear oil temperature

Does anybody run a gear oil temp gauge?
Thats one thing ive never seen in a half ton.
Is seen them in every 18wheeler ive been in, but they do have a bit more stress put thru them to generate heat.

Im fixin to start towing some more and got curious bout the temps.

Ive got a jegs girdle cover on it now, and i think it has a temp port on it. Cause its too small and high to be a drain.

Thoughts?
Old 05-24-2012, 04:39 PM
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nobody??
Old 05-24-2012, 04:42 PM
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No input. But i thi k nascar cars have a coooler on the rear end. I know that has nothing todo with your post but i thought it was an interesting factoid
Old 05-24-2012, 04:48 PM
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I know I've read a couple magazine articles where they saw a 20 degree temp drop after swapping to an after market aluminum cover but I can't remember the operating temps before or after. I'll try to find one of the articles.
Old 05-24-2012, 04:54 PM
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im goin to get a gauge and sender before i tow another trailer just to see the difference in temps.. i need change the fluid anyway.
Old 05-24-2012, 08:29 PM
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I put an infrared thermometer on the bottom of my differential when I was breaking in my gears. The hottest I saw directly after an easy 30 minute drive was 130 degrees. I will check after running it hard in a few weeks and see what I get.
Old 05-24-2012, 09:02 PM
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Friend of mine bought a hotshotting truck with a rear end temp gauges. Normal driving unloaded it hardly ever moved the gauge. Loaded up and driving hard I think it got to about 160*. That was in a 3500 cummins dodge.
Old 07-17-2012, 02:41 PM
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Hum cool..

I still havent bought a gauge yet
Old 07-28-2012, 08:28 AM
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The big Dana rear in my F450 will get up to 185ish after a long drive but it's also dragging around 17K worth of truck and my equipment. Plus this rear end has been noisy as hell since it was new.... Probably has a lot to do with it. I'm just gonna drive it till she pukes, or they put me in another truck, whichever comes first lol.
Old 07-28-2012, 12:18 PM
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I bought a sending unit to put in the rear to attach to a temp gauge in the cab. Still debating doing it though. I don't tow so im not sure if there is a point really.


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