1994 E320 Coupe with ASR, differential oil question

Hi guys, this topic has been raised a few times but the answers seem to be conflicting. What oil should I use, dino Liqui Moly 85w90 or synthetic like Mobil 1 75w90? Also does ASR make any difference in this equation? Thanks all.

Hi guys, this topic has been raised a few times but the answers seem to be conflicting.
What oil should I use, dino Liqui Moly 85w90 or synthetic like Mobil 1 75w90?
Also does ASR make any difference in this equation? Thanks all.

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