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98 S70 Transmission

posted by  checksix on  Fri Jun 12 18:37 CST 2009
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last visit: Fri Aug 10 22:07 CST 2012
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The S70 is my daughter's car that I'm getting ready to do a major service interval since to my knowledge it's never been done. She has 150,000 mile and was serviced by Volvo up to around 90K. In researching I asked her for the VIN and I then translated that to show a AW55-50SN transmission (code 5579W). I didn't think that model went back that far. The owners manual calls for ATF Dexron III or Mercon oil, but it's commonly discussed here that the correct fluid is Mobil 3309 or equivalent for this model transmission. I'm no rookie, but now I'm confused. My V70 T5a uses 3309, and the VIN Code says it's an AW42.

Does all this sound right? Comments please!

Jerry
01 V70 T5a








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    98 S70 Transmission

    posted by  KlausC on  Sat Jun 13 05:34 CST 2009
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    last visit: Fri Oct 24 10:15 CST 2014
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    Your 2001 does require 3309 in the 5 speed tranny. The 1998 has a 4 speed and can use either Mobile 1 ATF (synthetic) or Dex/Merc III, but NOT 3309. The 1998 tranny is an AW55 which was used from 1993 - 1999 or 2000.

    Klaus
    --
    Common sense trumps a PhD








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      98 S70 Transmission

      posted by  checksix on  Sat Jun 13 18:34 CST 2009
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Fri Aug 10 22:07 CST 2012
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      Klaus,

      Seems there are a lot of posts out there the say they have the AW55 transmission in cars up to 2004. I'm not sure they even know what they have. I did find this post while searching and thought you might enjoy.

      http://www.sonnax.com/tech-articles/TASC-TIP-07-08.pdf

      Jerry







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