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ATF or 15w40?

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  • ATF or 15w40?

    Picked up an '06 Meristar and changing the trans fluid out. I was told it would be wise to use 15w40 instead of ATF. Thoughts?

  • #2
    I use 15w40 for my 2011 X2. Some say it keeps the plates from "slapping" each other at idle and low speed, thus creating a quieter transmission.

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    • #3
      V-drives and gear reduced transmissions from that era typically get the 15W40 to alleviate rattle.
      Previous: 1993 Prostar 205

      Red 1998 Closed Bow Ski Boat, Ford 351, 310 hp, Acme 4 blade, Perfect Pass SG.

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      Tyler Ski Club


      To me, this forum is about love of inboard boats. It is about the sharing of information and, on a good day, some humor. It is not about post count, brand of boat, or any other superfluous labels that lend themselves to a false sense of superiority. Please, respect one another, try to pass on accurate information, and keep your eye on the ball.

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      • #4
        Originally posted by psbudz View Post
        Picked up an '06 Meristar and changing the trans fluid out. I was told it would be wise to use 15w40 instead of ATF. Thoughts?

        My 06 uses motor oil.
        Tim
        Gone, surfing.

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        • #5
          Originally posted by CantRepeat View Post
          My 06 uses motor oil.
          Plus 1.

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          • #6
            Plus another

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            • #7
              My dealer (Rambo Marine) advised me to use motor oil in my '99 205v.

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              • #8
                I've always used ATF - but I have a DD.

                One question for the masses - it is generally acknowledged in motorcycles with wet plate clutches that some motor oils (remember shared trans/engine/clutch lube) can cause reduced friction in the plates.

                ANy issues in that with a velvet drive?

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                • #9
                  Use ATF Dex/Merc in a Velvet Drive and any 1:1.
                  Previous: 1993 Prostar 205

                  Red 1998 Closed Bow Ski Boat, Ford 351, 310 hp, Acme 4 blade, Perfect Pass SG.

                  FAQ


                  Tyler Ski Club


                  To me, this forum is about love of inboard boats. It is about the sharing of information and, on a good day, some humor. It is not about post count, brand of boat, or any other superfluous labels that lend themselves to a false sense of superiority. Please, respect one another, try to pass on accurate information, and keep your eye on the ball.

                  Comment


                  • #10
                    Thanks everyone! I will go with 15w40 as I will be doing quite a bit of wakesurfing @ 10 to 12mph.

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                    • #11
                      I think the issue was simply a rattle at idle. I switched over on mine and noticed a slight reduction in noise at speed, but mostly so I only have to carry one kind of oil for the boat.

                      Attached is the service bulletin describing this.
                      Attached Files
                      1998 Maristar 200VRS

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