Step 37: Pre Measure 2-Stroke Oil
That bottle has the right amount of 2-stroke oil to mix with one gallon of gasoline.
Mix it in a gas can and shake it well, don't just pour it into your motor's tank.
Don't mix the gas until you need it.
The mixture starts spoiling and turning to varnish as soon as it's mixed.
Companies that sell gasoline preservatives claim it's measurably worse after just a few weeks.
It definitely gets nasty a lot quicker than it should.
Don't mix more than you'll use, and don't leave it in the motor, or next year your carburetor won't verb.