Hot Diff
08-09-2010, 07:24 AM
#1
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My Ride: 07 550i Titanium Silver, Black Dakota Leather, Steptronic, Sport, Premium, Nav, Sat. Radio, Logic 7, Comfort Access, Rear Sunshade.
While installing my RPI exhaust last week, I noticed that my rear differential was hot to the point that you couldn't touch it. Has anyone encountered this? One would think an open differential wouldn't heat up that much.
Thanks,
Rich
Thanks,
Rich
08-09-2010, 07:46 AM
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My Ride: '04 545i, sport pkg, premium sound, sprint booster,
This is normal. There is a lot of friction happening in the differential with the meshing of gears. That friction/heat is transferred to the dif oil then to the casing. If your concerned, check your differential oil level to see if it is correct.
08-09-2010, 04:16 PM
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My Ride: 2004 545i, 6-speed Manual, Silver Grey Metallic, Grey Dakota Leather, Cold Weather Pkg, Premium Sound Pkg, Sport Pkg, Lumbar Support
Guess that's why they've got the cooling fins on it...
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