GLK-Class (X204) Produced 2008-2014

Proper Gear lube

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Old Jul 9, 2020 | 11:35 AM
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2013 glk 350
Proper Gear lube

Is Mobil 1 synthetic gear lube LS, good for a 2013 glk 4 matic ?
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Old Jul 10, 2020 | 09:24 AM
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For diffs? I think that's what 2014 E-class call for.
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Old Jul 10, 2020 | 10:32 AM
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2013 glk 350
What can I use besides MB fluid
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Old Jul 10, 2020 | 01:23 PM
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2015 GLK350
This is the authority:

https://bevo.mercedes-benz.com/beam.en.html

I think we use 235.7 spec gear lube.

https://bevo.mercedes-benz.com/bevolisten/235.7_en.html

Last edited by formerjeepguy; Jul 10, 2020 at 01:36 PM.
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Old Jul 10, 2020 | 04:44 PM
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Would the 235.7 be for the front differential also , since the mb site shows Rear Axle Gear, I would think they would be the same , front and rear differentials
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Old Jul 10, 2020 | 04:52 PM
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I was looking to put in synthetic, the winters get cold here!
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Old Jul 10, 2020 | 06:19 PM
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Originally Posted by Mmr1
Would the 235.7 be for the front differential also , since the mb site shows Rear Axle Gear, I would think they would be the same , front and rear differentials
MB likes things to be complicated, most 4matics call for different fluids front and rear.
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Old Jul 10, 2020 | 06:40 PM
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I read the front differential has no fill plug, so you are supposed to fill from the drain plug and just force in a specific amount ? Crazy
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Old Jul 10, 2020 | 09:03 PM
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Originally Posted by Mmr1
I read the front differential has no fill plug, so you are supposed to fill from the drain plug and just force in a specific amount ? Crazy
No, you are supposed to remove a CV axle shaft and fill through the opening. Obviously MB considers this a one time fill from the factory!
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Old Jul 10, 2020 | 10:50 PM
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Originally Posted by Mmr1
I read the front differential has no fill plug, so you are supposed to fill from the drain plug and just force in a specific amount ? Crazy
Yep...0.6L. Measure how much comes out.
You can use the same screw in-adapter used to fill tranny, pump a bit extra to account of spillage. It's not as hard as it seems.

Last edited by NYCGLK; Jul 10, 2020 at 10:52 PM.
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Old Jul 10, 2020 | 10:51 PM
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Originally Posted by E55Greasemonkey
MB likes things to be complicated, most 4matics call for different fluids front and rear.
nope, same front and rear on 2010 GLK and 2014 E350, so not sure what you are talking about
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Old Jul 11, 2020 | 11:15 PM
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Originally Posted by NYCGLK
nope, same front and rear on 2010 GLK and 2014 E350, so not sure what you are talking about
A quick search through WIS says you are correct about the GLK differential oils. However, on the larger SUV's (ML/GL) the oil spec is in fact different for front and rear differentials. Likely all the cars use the same fluid front and rear, since the GLK is a C-class platform, that makes sense.
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Old Jul 13, 2020 | 12:01 AM
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Originally Posted by E55Greasemonkey
A quick search through WIS says you are correct about the GLK differential oils. However, on the larger SUV's (ML/GL) the oil spec is in fact different for front and rear differentials. Likely all the cars use the same fluid front and rear, since the GLK is a C-class platform, that makes sense.
You sure? I have heard that Transfer case runs different fluid from the diffs. I think that was the case on 2015 ML350 but not 100 sure.
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Old Jul 14, 2020 | 09:43 PM
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Originally Posted by NYCGLK
You sure? I have heard that Transfer case runs different fluid from the diffs. I think that was the case on 2015 ML350 but not 100 sure.
Yes, my 2008 ML350 uses the red ATF fluid in the transfer case. It does not share the same fluid supply with the transmission. The front and rear diffs definitely call for different fluids I'll find the chart and post it here.
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