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  1. #1
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    300X Question compared to the XB

    If an engine has accumulated 600 hours on the computer, and 200 hours since it has been refreshed... are the chances of it blowing up soon likely?

    This might be a silly question but I'd like to know the reliability compared to my former XB... that probably had that many hours on it...

    I dont mind paying for gas if it is dependable...

  2. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    Apr 2008
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    Greenville, SC (US)
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    #2

    Re: 300X Question compared to the XB (ThunderCat)

    Dependability should be very similar.

    ACTUAL engine run hours are just a "relative" item. What's far more important is HOW THE ENGINE WAS CARED FOR, TREATED, AND RUN DURING those engine hours.

    I've seen similar engines run for THOUSANDS of hours with no major problems- and I've seen them TRASHED in under 10 hours when not cared for or run properly.

    A Leakdown Test is a good measure of the engine's overall health.




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