What's the useful life expectancy of premix if stored in a properly sealed metal container (jerrycan for instance)? I have 8 litres of premix sat in my garage and considering I only use around 2-3 litres each time I ride, it expect that it'll be sat there for at least a couple of weeks. Will it still be OK to put in my bike?

Hello again Neon: I use mine after stored up to three months with no ill effects. It seems a waste to use it up in the lawn mower or something when you've put your hard earned money into two stroke oil for it which isn't cheap. The only way gas goes bad is the explosive parts gradually evaporate and leave the oily carrier fluid. This eventually will turn sour and become stinky. You'll know if you smell it. In some of my old vintage race bikes the fuel is still good after a year in the tank. If it's not too bad I just fill it up with the fresh mix and run it. Don't worry.

But don't forget to shake the can when your going to fill up.(i think you know why)

Gavin