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    3.0 merc low rpm's

    I have a 1988 searay with a 3.0 merc and a 17 pitch prop. At full throttle I only turn 3400 to 3600 rpms @ about 30 mph. I know I should be around 4200 to 4600 rpms. Any ideas on what could be going on.
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    Which Service Manual do I need?

    I have 88 searay with 3.0 lt mercruiser. Which manual do I need for the motor?
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    Uflex Racktech steering cables

    Has anyone tried a Uflex racktech steering cable or know anything about them? Im just wondering if they are any good.
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    Gear oil for a 3.0 lt

    Does anyone know what gear oil I use in 3.0 mercruiser outdrive? I was looking through the service manuals and didnt see it.
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    3.0 LT Mercruiser exhaust manifold water leak

    I have a water leak coming from between the block and the exhaust manifold. what would cause this and is it going to hurt it running? This motor is on a 1988 searay.The motor runs great doesnt over heating or anything. Also I ran it on a water hose for abot 30 min and I dont have water in the oil.
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