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    New boat owner oil question.

    Hi All, I just got a 1989 Celebrity 187 bowrider. It has a 5.7 MerCruiser. I have been reading a lot of post on oil types. I have decided to go with Shell Rotella 15w40. Do I use the T1 straight grade or the Triple protection. Also would it be ok to use an AC Delco oil filter? I believe it will...
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