Keep in mind guys - as it always in when premixing anything (cars, bikes, lawnmowers, etc) you add the oil to the tank FIRST and then add the gas... otherwise it won't mix evenly. You use the pressure from the gas pump to slosh the oil around and mix properly.
If you are using the stock OMP you really wont need more than 3 to 5oz like others have mentioned. Going more than 100:1 is a bit much....
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