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Discussion Starter · #1 ·
Uh-oh. I just installed an Amsoil SDF-13 oil filter with Mobil 1 5w-30, and now it seems that the SDF-20 is being used on WRX's. The good people at SPMotorsports.com have never done me wrong, and they sold me the SDF-13 filters. Should I be worried? That filter is slightly smaller than the Subaru or Bosch filters I've been using, but seems to fit just fine. ????? :confused: ?????
 

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As long as the rubber seal was in the same place as the original and the filter threads on. I don't see a major problem. It might be a slightly smaller filter, but it should work. Just swap it out for the correct one next time.
 

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Discussion Starter · #3 ·
beastcivic said:
As long as the rubber seal was in the same place as the original and the filter threads on. I don't see a major problem. It might be a slightly smaller filter, but it should work. Just swap it out for the correct one next time.
Thanks, BC. I feel a little better...
 
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