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Old 03-09-2020, 06:29 PM
Registered User
Join Date: May 2008
Location: San Mateo, CA
Posts: 102
190e Differential Fluid

Hi folks,

I have searched the forums and came up with three different choices. See below:

Liqui Moly GL-5 75W-90 fluid

Liqui Moly GL-4+ 75W-90 fluid

Redline 75W-90 Gear Oil fluid

Just inquiring what is the best brand fluid recommendation to use? Thank You!

200 75 W115 (Mom's)
190e 90 2.6 W201
E320 95 Wagon W124
72 BMW 3.0 CSI
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Old 03-10-2020, 02:02 AM
party's Avatar
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Join Date: Jun 2016
Posts: 417
Mobil1 will be cheaper, easier to source, and do the same job.
Watch him go!!! link

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Old 03-11-2020, 04:53 PM
Registered User
Join Date: Nov 2010
Location: TX
Posts: 3,943
I can usually find valvoline synpower 75w90 at parts stores quite easily and with a lower price tag too.

I personally like to use mystik 80w90 from orielly parts or tractor supply on older differentials asking for an older spec heavy gear oil.
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)
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Old 03-11-2020, 07:14 PM
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Join Date: Dec 2006
Posts: 3,915
I never use synthetics for differentials. Some vintage cars use leather diff seals, which are completely transparent to synthetic lubes. I don't tknow whether this is the case with the 190d, but better safe than sorry.
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Old 03-12-2020, 03:51 PM
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Join Date: Mar 2003
Location: Southern California
Posts: 2,207
You don't need an expensive "synthetic" 75W-90 GL-5. Any 80W-90 GL-5 is just fine. Brand makes no difference. Just make sure the label includes the API "donut" with SAE 80W-90 GL-5 spelled out. DO NOT USE ANY GL-4. GL-4 lacks the EP additive (what gives GL-5 its pungent odor) required for hypoid gears.

If it's a 16V and you're doing a complete axle fluid change you'll need some limited slip friction modifier - same as what any cars with clutch type LSDs use. The NAPA p/n for a four ounce bottle is NCB4285V.


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