Got a hedge trimmer today for our new house ( a LOT of trimming to be done). It's a 2 stoke cheapie. Got some shell Lawn-2 2 stroke oil. Is it ok to mix the fuel and oil in the little tank? I don't want to make up a batch of fuel (like 5 L) to only let it go stale after 3 months (this is what the guy who sold it to me said). Need a 1:25 mix of oil:fuel. And is regular unleaded OK to use? my father had a monster of a 2 stroke lawnmower... kept it 15 years, but more often than not was not running - he swore off 2 strokes thereafter. he is an all electric man now.