Just wanting to get some opinions on this.<br /><br />My dad used my boat over the weekend and went to fill the right tank, he dumped 32oz's of oil in the tank then only had enough fill space to pump 7 or so gallons (faulty Fuel gauge)and I never told him that the tank had gas in it already leaving the mix about 5 gallons short.<br /><br />I am wondering if it is best to just use the tank and burn off 5 gallons or so and then add 5 gallons on top or if I should just siphon off the entire tank and refill and re-mix from scratch.<br /><br />Any info would be greatly appreciated.