Champion Tune-Up Saves Gas and Trouble For Summer Driving
A promotional test by the U S Auto Club shows cars with Champion spark plugs and basic tune-ups after 10 000 miles ran smoother and used more than a gallon less per tank. The study covered Chev rolets Fords Plymouths Ramblers and others, prompting annual or 19 000 mile tune-ups for dependable motoring.