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Mobil 1 syn oil is bad?

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Old 02-15-2010 | 12:48 AM
  #31  
LegAC_GT's Avatar
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Car Info: 05 OBP LGT LTD. Sedan
Originally Posted by ScoobySon

what he said lol.
Old 02-24-2010 | 04:47 PM
  #32  
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Car Info: 2006 WRX STI
Originally Posted by ScoobySon
...SOA does not like deviations from 5W-30 and Subie filters.
Ok. Update. I read the oil changing section once again in the new version of the owners manual (MY09) I found as a PDF on my.subaru.com. Snippets below...

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Although, 5W-30 is preferred...and that is what I was previously convinced to run by the dealership, I am for sure changing over to 10W-40 (Winter) or 20W-50 (Summer). Here are some ideas...

AMSOIL SAE 10W-40 Synthetic Motor Oil (AMO)

SAE 20W-50 Synthetic Premium Protection Motor Oil (ARO)

So for the "Severe Condition" you can use API SL Grade, which the above oil qualifies. So I really can't see this being dangerous for engines under warranty.
Old 02-24-2010 | 06:29 PM
  #33  
JaysImpreza's Avatar
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Car Info: 09 WRB WRX GE Premium
^ moving up one level eh? i guess that make sense since it never snows here lol.
Old 02-24-2010 | 09:49 PM
  #34  
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Yeah. Even for 10W, the coldest I see is Tahoe. AFAIK, never seen Tahoe below 0 degrees F.

And how unlucky I've been with the two EJ255 in the last 35k, I need more protection!
Old 02-24-2010 | 09:53 PM
  #35  
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Car Info: 2006 Subaru WRX STI
I use Shell Rotella t6 synthetic
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