no
The 4 stroke Yamaha outboard requires a quality SAE 10W-40 motor oil.
2stroke.
Its 4 stroke so 100:0
The dry weight of a 2002 model, 75hp Mercury outboard 4 stroke, is 386 lbs.
30lbs
21kg
The 850 model, 85 hp Mercury outboard, is a 2 stroke engine requiring a 50:1 fuel to oil ratio.
propeller
125 is the least
With a 2 stroke engine, you mix the oil with the gas. With a 4 stroke engine, there are separate tanks for the oil, and the gas.
I have heard yamaha, mercury, and suzuki. Although Suzuki is the quietest the mercury is a much better motor. Yamahas are junk. Evinrude and other 2 strokes are loud, but they are the most fuel efficient, and hands down the best motors. This is a common misconception because many think 4 stroke is the best. Four stroke motors are the quietest, but they only get good gas mileage at a very small non desirable rpm range. While a 2 stroke engine is almost as fuel efficient when pushed to the limit as the 4st is at cruise.vdz4k