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  1. K

    OMC 1993 3.0L Cobra. What oil to use?

    Thank you. What about 20w/50 for engine??
  2. K

    OMC 1993 3.0L Cobra. What oil to use?

    Manual says SAE 30w. I keep seeing people 80w/90.???? Opinions?
  3. K

    OMC 1993 3.0L Cobra. What oil to use?

    Manual says SAE 30w. I keep seeing people 80w/90.???? Opinions?
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