If it is a two stoke engine, and there are no specific prohibitions yes. Two stoke oils are broadly similar.
SAE 10w30 oil or Yamaha 4 Stroke Engine Oil
40;1
It depends if it is a 2 stroke or a 4 stroke. A 2 stroke engine, you mix the gas and oil. A 4 stroke engine, there are separate tanks for the oil and gas.
What is the fuel to oil ratio for a mercury 9.9 hp 2 stroke engine?
whereiscrank case oil drain plug on 1998 mercury 9.9 4 stroke
If it is a 2 stroke use 80/90. Weight gear oil. If its 4 stroke run what specified on the engine
Three ounces of Two-Stroke oil per gallon of gas
Two-stroke oil is two-stroke oil. Any good brand is fine.
All the Yamaha PW80's and PW50's are 2 strokes, so they dont have engine oil. You mix 2 stroke engine oil into the petrol using 25:1 mixing ratio as im pretty sure you know this already. But they do have transmission oil. You can use 4 stroke engine oil for this, or alternatively, use proper transmission oil.
Anything that is high performance 2 stroke oil that's what i use and it works great.
The fuel mixture for a Yamaha 40 hp 2 stroke outboard engine is 50:1, gas, oil mixture. You should use new gas when you get the engine ready for the season.
The 850 model, 85 hp Mercury outboard, is a 2 stroke engine requiring a 50:1 fuel to oil ratio.