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Oil Type and Brand?

WildboatingWildboating Member Posts: 957 ✭✭✭
in General Boating Questions archive
The guy at west marine is telling me that i need the diesel blend of rotella for my engines.  I would love to hear what you are running and why.  Thanks


2003 342 Merc 350 Mag MpI
2003 Rinker 342 Fiesta Vee, 350 Mag MPI, Bravo 3 2.20:1 w/ 22p 4 x4 props

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    F1100F1100 Member Posts: 292 ✭✭✭
    Canadian Tire brand.

    why..it meets requirements and is low cost.


    1993 300 FIESTA VEE TWIN 5.7L ALPHA GEN 2
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    Black_DiamondBlack_Diamond Member Posts: 5,439 ✭✭✭✭✭
    Usually the reason for diesel engine oil is the high zddp (zinc) additive. I have same set up and run Mobil-1, I like synthetics. 

    Past owner of a 2003 342FV
    PC BYC, Holland, MI
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    Handymans342Handymans342 Member Posts: 10,375 ✭✭✭✭✭
    No way LOL
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    WildboatingWildboating Member Posts: 957 ✭✭✭
    So is there something you pro's recommend?
    2003 Rinker 342 Fiesta Vee, 350 Mag MPI, Bravo 3 2.20:1 w/ 22p 4 x4 props

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    Cableguy GregCableguy Greg Member Posts: 5,012 ✭✭✭✭✭
    I run the Merc synthetic blend with a Merc High Eff oil filter.
    2008 280 Express Cruiser, 6.2MPI, B3, Pittsburgh, PA "Blue Ayes"
    Go Steelers!!!
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    rasburyrasbury Member Posts: 8,242 ✭✭✭✭✭
    Wild, I have 55 bucks worth of oil and filter a guy in a shop recommended me in my garage- ended up going down to merc and got the factory stuff. There is a guy somewhere at merc, slide rule and black horned rim glasses, that has made a living figuring out what these motors should run on. 25 bucks for the stuff in my garage, I'll pay shipping?
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    F1100F1100 Member Posts: 292 ✭✭✭
    umm thats cause merc wants to sell oil ..no other reason...
    1993 300 FIESTA VEE TWIN 5.7L ALPHA GEN 2
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    Michael TMichael T Member Posts: 7,227 ✭✭✭✭✭

    Mercruiser semi synthetic if you have catalytic converters as it is specially formulated for the bricks in their catalytic converters and their high efficiency oil filter.

    If I didn't have catalytic converters on my engine I'd run Mercruiser full synthetic and Mercruiser high efficiency oil filters.

    Half way through the season I remove my oil filters and top-up the oil level for added insurance.

    Then just have fun with those Mercruiser(s)!

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