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GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

Diff Oil change

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Old 05-01-2016, 03:47 PM
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2010 C300 4Matic, 2011 GL450, 2005 ML500, 2010 GL350 and 2003 SLK230
Diff Oil change
Everyone always mentions the transmission service being extremely important but what about the diff? Anyone ever change it or know the intervals to change?
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Old 05-01-2016, 07:12 PM
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2011 GL 350, P1 Package, HID headlamps, Blind spot assist, Parktronic, Wood steering wheel
Search the forum for differential and you can see several threads on this topic. I think the consensus is to change out diff fluid every 50k miles. Particularly if you are hard on your truck or tow...
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Old 05-01-2016, 08:01 PM
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2008 R320 CDI, 1987 560SL
Just change it at the same interval as your transmission. It shouldn't cost very much, so it's cheap insurance.
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Old 05-01-2016, 09:06 PM
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2010 C300 4Matic, 2011 GL450, 2005 ML500, 2010 GL350 and 2003 SLK230
Thanks guys
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Old 05-09-2016, 01:42 PM
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Probably because a transmission repair is $$$$ and differential failure is rare. But it's cheap insurance and easy, so no reason not to do it.
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Old 05-09-2016, 04:57 PM
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my understanding is the ML and GL are prone to front differential problems, i would change my fluid

mine are done every 40,000
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