Originally Posted by Kernow
Suzuki df 140 38 kts
Optimax 135 42 kts
Opti 135/150/175 2.5L V6 195kg
(Opti 75/90/115/125 1.5L 3cyl 170kg)
Suz 100/115/140 186 kg
On a 6.3 ours is about 1.2L per mile at cruising. Tony T on here gets about 0.9L per mile.
He loves his, he cruises a lot though! We do 2 cruises (50-80m) a year, then fish, wakeboard and play about. The torque and throttle response of the 2 stroke is far superior for that type of activity. It's horses for courses.
Doing 50hrs per year, oil us in neglible. Noise wise, at idle it is fine when we troll fish, but the suz is v quiet, though no more than the 125 opti, perhaps a fairer comparison. Though on a 6.3 this may not have the torque needed as it is a 1.5L.
At speed, after a lurrrvly V growl as you power through the mid range, it settles to a hum which you hardly notice due to wind. Just like V6 cars, great noise when you accelerate, but quiet at a constant speed.