I have a 9.8 that I bought new in 2011, I use it on a RIB tender to get out to my sailboat on a mooring. It sits on the beach on the RIB for 6 months a year, gets used for 5-10 minutes once or twice a week, often less. Starts on the first or second pull every time, runs quiet and smooth. I bought it because it was the lightest 4 stroke in its h.p. class, but it surprised me with how bullet proof it is. The way I use it can't be good for a motor, and it has been washed over by crashing waves while on the beach, but it just keeps on running.
