I have seen old steel gas cans that have no rust in them like I have in my tank. I put my finger in the top of this tank and I wipe off moist rust. The longest this sat without being ran was 6 weeks and I went to work and back (10 miles) without any difficulties. Further, I do not recall the owners manual mentioning anything about "Be sure to leave the tank full at all times to prevent the growth of rust on the inside of the fuel tank." It only mentions filling the tank up and putting stabilizer in the tank if sitting for an "extended period of time."
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