S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Transmission fluid change

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Old 03-13-2008, 05:45 PM
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Default Transmission fluid change

I am going to change the tranny fluid on my car soon and wanted to know what you guys think of using either Lucas 80w90 OR Mobil 1 75w90 tranny fluid? I know OEM is 75w90 but I can get both of these here locally. The Lucas is a bit thicker but I know they make good stuff. TIA
Old 03-13-2008, 06:18 PM
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Default OEM, Redline MT-90, and Motul Gear300 are popular fluids.

I switched to Redline MT-90 when I first bought my S, and *did* notice an increase in smoothness while shifting.

I wanna try the Motul product someday...Supposedly it adheres to the OEM spec more closely than the Redline product.
Old 03-13-2008, 06:56 PM
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Default 80w90 shifts will not be smooth if temps go below 30(more)

until cars warms up. Even Redline MT-90 is not that smooth in cold weather. I might try Redline MTL next winter season or Motul.
Old 03-14-2008, 05:15 AM
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Default I mixed 2 bottles of Redline MT-90 with 1 bottle of Redline MTL, shifts like butter

If butter could shift
Old 03-14-2008, 03:04 PM
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Default

AMSoil 75w90 severe gear, love it so far ~1500 miles
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