Page 3 Advertisements Column 5

Wairarapa Age, 18 March 1929, Page 3

NON-DETONATING Neither the most powerful powder nor the most powerful Motor Spirit Detonates 'T’HERE are two kinds of Motor Spirit, just as there are two kinds of powder. One detonates—explodes as a single crash. It beats the piston down with a sledge-hammer blow. Having a tendency to explode prematurely, it limits power, decreasing power and efficiency. It often causes “ knocking ”on hills. And the crashing blows, repeated, increase vibration, which means more wear and tear. Detonating Motor Spirit and Dynamite are similar, in that both detonate. Union Motor Spirit is different. Like the smokeless powder used in big guns, it does not detonate. Thus explosions are progressive and prolonged. They thrust the piston down with a steady, sustained impulse, just as the big guns thrust out the projectile. t . These explosions permit higher compression, for a compression is limited by the tendency of a fuel to detonate, as all authorities know. You enjoy more power and efficiency from a fuel like this. ■ \ . Union Motor Spirit was used on the “ Southern Cross ” Flight. Test it for 50 miles. Try starting acceleration, hill-climbing, speed. Then decide which fuel you will uee hereafter. ONION MOTOR SPIRIT Non Detonating The running mate to Atlantic Motor Oil Ums 73a—29 Save the Coupons SEND FOB LATEST LIST OF , IL.FREE GlFTS:—Standee Knlrea, Forks, Spoona, Alafl • mln in m StOWJMQS, KttdMn Utensils and Fountain Pens an /[ ‘•vita that are obtained FEES by I Hp****" fl earing coupons from ' Sinker Tip." packets. For oampHSn fl “ Amber Tip* Gift, ’* Oggsgi I t - c fl 1 P.O. Ban 940, ChnatehmA UT Good Living demands | Study your Health and Pocket— 11116 163 I Use Economy also Justifies M. ’AmberTips’ -Cal JFINE - CeyTnsßest 111