CJ428 12 Posted November 29, 2015 My boat is 32 years old w a steel tank. I drain it down to 1/2 a gallon each year, add 4 oz of oil and a small amount of stabilizer. I looked inside this year and no rust. I know some recommend having it full- what do you do? Quote Share this post Link to post Share on other sites
Far Beyond Driven 10 Posted November 30, 2015 Full, because I'vé always done it. Never had a fuel related issue. Quote Share this post Link to post Share on other sites
CITM 0 Posted December 2, 2015 A full tank reduces the amount of exposed surface area for condensation to form inside the tank.If it's in heated storage, it won't condensate so it doesn't matter either way. Quote Share this post Link to post Share on other sites
