Took Sweet Willy, 55 Bermuda, on a couple of hundred mile cruise Saturday. Western Montana, 4 to 6500 ft altitude with plenty of climbs. Beautiful day but had vapor lock problems even with electric booster fuel pump and hard starting. Anyway had to fill with gas at a small cow town 60 mi. from home, terrible mileage with all the climbs and having to kick out of O.D. They had a pump with non alcohol premium fuel which I used. Car ran beautifully the rest of the way home even crossing 6500 ft continental divide. Even starts easier. NO more alcohol for me.