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#4487178 - 08/13/17 10:02 AM differential oil, heat
LAT Offline


Registered: 08/06/17
Posts: 1
Loc: Rancho Cordova,Ca
I have a BMW Z3 3.0l. I had some quarts of Lubrication Engineers ISO 110, leftover from my previous S2000 which had been recommended.
Does anyone know if this is good, bad, or adequate? interesting info is posted on Youtube.
Also diff is quite hot to the touch after a long drive, is this normal?

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#4487189 - 08/13/17 10:20 AM Re: differential oil, heat [Re: LAT]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18157
Loc: Dallas,Tx USA
Originally Posted By: LAT
Also diff is quite hot to the touch after a long drive, is this normal?


Definitely normal. Mine does the exact same thing.
_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 0W20



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#4487210 - 08/13/17 10:43 AM Re: differential oil, heat [Re: LAT]
MolaKule Offline


Registered: 06/05/02
Posts: 19042
Loc: Iowegia - USA
Since mechanical efficiency is always less than 100%, some of the HP from the engine goes into heating the oil and overcoming friction so differentials will get hot.

If overly concerned, purchase a finned after-market differential cover and replace the old cover and fluid with synthetic gear GL-5 lube.


Edited by MolaKule (08/13/17 10:44 AM)

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#4487228 - 08/13/17 11:12 AM Re: differential oil, heat [Re: MolaKule]
4WD Offline


Registered: 09/21/10
Posts: 6366
Loc: Texas
I do that on pickup rear ends somewhat for the cooling - but they tend to up the gear oil capacity as well.
Mine has drain, vertical fill (fill from bottle, no pump) and an oil level "tattle tell" port - all easy to get to ...
Lastly - this puts machined on machined gasket faces - gets rid of the flimsy stamped cover - never leaks.

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