I own a 9.9 4 stroke
for 4 years before i get the engine
stoled in St Lucia
, i can give you 2 good advices based in this engine
, 1. Try to fresh water
flush this engine often if you can , 2. Use the Factory aproved or a equivalent oil
and change it at the regular intervals.
the engine save you lots of cronic water
flow problems and expensive repair bills , mine get some internal corrosion
at the oil
pan case and the water flow is restricted giving us a terrible nightmare to found the problem.
In other words is a great engine , and can last forever if you take care of this 2 points.
No idea about the fuel burn, but i remember the gas at the tank last for a long while,
my actual 15 enduro 2 stroke
suck the whole tank in 2 days !!