Probably a dumb question-Getting ready to change my oil. 2000 Moomba Mobius V, Indmar 330 HP EFI, 5.7L...The Indmar manual says 15W-40 Pennzoil marine oil but I can't find it. The Moomba manual says 10W-40 oil is okay, which is what I bought. Will Pennzoil 10W-40 be okay?? Thanks
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