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  1. T

    castro edge OIL

    Thanks madar, That thread makes the answer about as clear as the Mississippi River. Lol
  2. T

    castro edge OIL

    Question for the Mazda Engineers on here. Why does my owners manual specify 5-30 everywhere else in the world beside the US and Canada? Do the US and Canada cars have a different engine than the rest of the world? Just wondering, kind of puzzling to me. Thanks
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