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    2013 Kia Optima 2.0T, Castrol Edge 5W-40, 4,773 miles

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    2017 Mazda CX9 2.5T, PUP 5W-30, 4,858 miles

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    PUP 5W30 3,429miles 2017 Mazda CX9 2.5T

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    M1 TDT 5W40 5k miles 58k 2013 Kia Optima 2.0T

    4qts of TDT 5W40 + 1qt of M1 5W30. This sample was about 75% stop and go and commuting in traffic. Prior samples I would say was closer to 50%.
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    2017 CX-9 First UOA on Factory Fill

    My understanding is Mazda FF usually contains tons of moly. So where's the moly?
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    Oil Recommendation 2017 Mazda CX-9 2.5T Skyactiv

    Hello, Would like some opinions what oil to use. Manual is brief and only states Mazda or Castrol 5w30 with API or ILSAC certification. Would like to stick with 5w30 to meet warranty requirements. In my 2013 Optima 2.0T I have been using 4qts of M1 5w40 TDT and .75qts of standard M1 5w30...
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