I’m looking at a boat that has a 2009 etec 250 ho on it. Seller has had impeller and plugs done earlier this year. It has about 250 hours on a new power head from a few years back. He has run only the xd100 oil through it. My question is about the long term reliability of the motor. Are they known to be reliable or troublesome? What items may need special attention as far as routine maintenance? Is there a certain grade or type of gas that these engines like better than others? What’s the max rpm per the manufacturer? Just looking for advice before I pull the trigger on this thing. What compression should I Expedia’s normal across all cylinders?
thanks