W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Differential Fluids - For those who used non OEM fluid

Old Jul 27, 2010 | 10:41 PM
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Exclamation Differential Fluids - For those who used non OEM fluid

I'm only interested on people who used aftermarket fluids such as Motul, Royal Purple, Red Line, etc... which one did you go with and did you run into any problems. I'm leaning towards Red Line 75w-90, Royal Purple 75w-90, Motul 75w-90 or Motul 80w-90. There are also people who used 75w-140. Please advise
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Old Sep 7, 2011 | 04:49 PM
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2005 C230WZ, 2004 E55, 2004 Audi S4
BACK FROM THE DEAD!!! NO REPLY FROM THIS EVER! I AM THINKING OF SWITCHING TO 75W140 IN EFFORT TO ELIMINATE BLOW OUT FROM DIFF VENT?! ADVISE PLEASE??
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Old Sep 8, 2011 | 12:16 PM
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Whatever we're tuning!
Motul Gear 300 75w/90 is what we currently use and you will not aerate/foam the Motul. You could also use Motul Gear FF Competition 75w/140 which we also use. Either one and you are good to go! Problem fixed.
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Old Sep 8, 2011 | 03:06 PM
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Is the factory diff fluid synthetic? Sounds as if it is not, or it's flash properties are low.
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