For area that have 10% ethanol in their gas, its best to use 89 octane. There is less ethanol with higher octane. The 87 octane with ethanol really takes a toll on the float seal, just eats it up. Ethanol tends to have a little more water in the fuel over time. I know several people that use 93 or 94 octane for the mowers. That is over kill and 89 will be fine.
4 stroke fuel is straight petrol, it does not have oil in it! If you use it in a 2 stroke engine you will seize the motor. 2 stroke fuel has oil added to it.
You need to define what your use of the oil will be. If you mean adding oil to the fuel, you do not need to do this on an 4 stroke motor. Or maybe you mean engine oil, or maybe transmission oil?
Fuel is fuel. The fuel only changes when you add 2 stroke oil to it. You can burn it in a 4 stroke engine, might smoke some, but it is not recommended for your normal outing.
The only way you don't mix fuel with your oil in a two stroke motor is if you have an oil reservoir with an injector separate from your gas tank. Otherwise mix fuel with your gas if it is a two stroke engine.
No 4 stroke motors use 91 octain fuel or better. You only mix oil & gas for 2 stroke motors.
it runs faster than a 4stroke but use mixed gas in the to stroke
In the crankcase your looking for 10W40 or any gear case oil from you local 2 stroke motorcycle store. I use 80W Racing oil. If your talking about the fuel then you need 2 stroke mix oil with your gas and that ration I would suggest would be 32:1
It will probably just foul the plug or wreck the engine because the oil is not designed to mix with the fuel and will not lubricate the motor.
Remember on a 2 cycle you mix the oil with the fuel. The mix can be from 32/1 up to 50/1. Use an oil specifically designed for a 2 cycle mix. Look for the term 2 Cycle Oil. The mix is determined by the manufacture. Look in the owner's manual or contact a dealer.
fossil
The motor cortex on the left side of the brain
Use to use Avgas fuel. Now use ultra fuel or diesel Fuel or jet fuel.