My 1986 evinrude 70hp vro(not used anymore) gets barely 1-3 mpg, is this normal? it runs very good, and is on a 1985-1987 thundercraft 16 ft; deep v-hull. the boat is pretty light, i only carry 6 gallons of gas and 1-2 people with me. it has been this way since we got it 2 years ago, i cannot...
