keep it as low as you can and add enough fresh fuel to get you thru the day, I've played around with an old aluminum tank, moved it around, in the sun, out of the sun, set it in a boat, set it under the boat, piled wood over it, you name it, I've moved it there, guess what, no measureable amount of water in the tank, personanly I think the whole condensation thing is BS. Better to add fersh fue, if you have any water in the old fuel, the fresh ethanol will absorb it, ya'll remeber when we used to add alchohol to fuel(dri gas) on purpose?
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