I don't even think about it, I just throw stabil in what ever I had left at the end of the seaon, and start running in the spring, Have never had a problem yet.
But thats in 3 seprate tanks, two 20 gal tanks and one 25 gal tank. All have been removed at one time and cleaned.
Now the new boat has one 115 gal tank!! I don't want to fill it to go fishing let alone to sit for the winter!
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