Differential operating temperature
#2
06-17-2007, 07:45 AM
It depends but It can get very hot, it depends on whether it's new gears and bearings or one with over, say ~5K miles or so (Broken-in). About 194F to over 370F.
I forgot where I stole this but it's likey from Amsoil or some other synthetic oil maker. I was shocked to see how hot an axle can get so I kept this:
I forgot where I stole this but it's likey from Amsoil or some other synthetic oil maker. I was shocked to see how hot an axle can get so I kept this:
A light duty truck towing 14,000 pounds was driven 500 miles. The test was conducted with both a new axle and a broken-in axle. Over level ground towing, oil temperature was measured at 230 degrees F in the new axle and 203 degrees F in the broken-in axle.
Oil temperature during a 6 percent grade the new axle was operating at 350 degrees F and the broken-in axle was operating at 300 degrees F.
Laboratory dynamometer test results simulating a truck hauling a trailer provided similar results, with level ground towing temperatures recorded at 266 degrees F with the new axle and 194 degrees F with the broken-in axle and towing temperatures (at a 3.5 percent grade) recorded at 370 degrees F with the new axle and 295 degrees F with the broken-in axle.
Oil temperature during a 6 percent grade the new axle was operating at 350 degrees F and the broken-in axle was operating at 300 degrees F.
Laboratory dynamometer test results simulating a truck hauling a trailer provided similar results, with level ground towing temperatures recorded at 266 degrees F with the new axle and 194 degrees F with the broken-in axle and towing temperatures (at a 3.5 percent grade) recorded at 370 degrees F with the new axle and 295 degrees F with the broken-in axle.
#3
06-17-2007, 08:26 AM
Yes, I found that site as well.
I have been a journeyman mechanic for 47 years and in that time have never seen a chart or any referrence.
No factory service manuals I have read make mention of it.
A fellow asked me the other day and I had that stare into head lights look.
I do know they can run quite hot and you can burn yourself.
I have been a journeyman mechanic for 47 years and in that time have never seen a chart or any referrence.
No factory service manuals I have read make mention of it.
A fellow asked me the other day and I had that stare into head lights look.
I do know they can run quite hot and you can burn yourself.
#4
06-17-2007, 11:56 PM
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