Run it threw the lawnmower, snow blower or through a daily driver. 2 years isn't that bad, I have some 5 year that I drain out of my Corvette (I drained my Corvette after 2 years thinking it would need to be drained but it didn't make that much of difference, but I didn't drive the car for another year so it need to be done). It has taken me three year to run it through my lawn mower and snow blower. Its get a little hard to start the lawn mower, but I am on my last tank ful
If you can, I would run your Typhoon tank low and fill it up with fresh gas.