National Geographic : 1970 Jan
ignition-withsparkplugs to last the life of the engine! tremendously increased power and efficiency. Coupled with Mercury's Thunderbolt ignition system, this produces more horsepower per cubic inch-more miles per gallon more horsepower per pound-more horsepower per dollar. Put very simply, Direct Charging means a lot more power in a lighter, more compact package, with less investment and lower operating costs. Again in 1970 a Mercury exclusive. New Perma-Gap sparkplugsdesigned to last the lifetime of the engine. With ordinary spark plugs, the center electrode is gradually eroded away by the spark. Now Kiekhaefer engineers have come up with a new, super-tough metal alloy for the center electrode that resists spark erosion. Under normal operating conditions, your new Perma-Gap spark plugs will last the lifetime of the engine. Hard to believe, but it's true. All new 1970 Mercurys are equipped with Perma-Gap spark plugs. Another Kiekhaefer engineering first and a Mercury exclusive. Thunderbolt ignition and Perma-Gap spark plugs prevent spark plug fouling and preignition due to lead deposit. Because of this, you can now take advantage of the wide availability and uniform consistency of regular automotive gasoline recommended for every model in the 1970 Mercury line. See your Mercury dealer now. Pick up your copy of the exciting new Mercury Catalog. You may just want to put your order in early. And avoid the rush. Because-for 1970 it's going to be a Mercury year all the way. FIRST IN MARINE PROPULSION COMPLETERANGEOF POWER:4, 7YV, 9.8, 20, 40, 50, 65, 80, 115, 135 HP. For Nearest MercuryDealer, see the Yellow Pages under "OutboardMotors." Kiekhaefer Mercury/Fonddu Lac, Wisconsin/Canada, Ltd./Australia Pty. Ltd.