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New Zealand Listener, Volume 36, Issue 930, 7 June 1957, Page 2

Thats Shell E that eas L Winter SHELL} WIth DTA COLD ENGINES Winter SHELL with ICA: vapour- I.CA: restores full power ises more quickly and 80 reaches START QuICK ! Pre-ignition in the combustion the cylinders in the form of ignitable chamber-~caused by lead and carbon With WINTER SHELL vapour much faster. That'8 what deposits ~is the main cause of power Kf your engine i8 slow tO fire these gives your car such 4 satisfyingly lo8s. Such deposits (they form mornings, if power is jerky; unsteady quick response on 4 cold morning: quickly, even in a new engine) glow a8 the engine warms uP, firing the in the first few minates of running petrol mixture before the pistons ~change to Winter SHELL: You start Seldom use the choke reach the correct position. Dissipat- Instantly ! with Winter SHELL: ing power. Shel?s patented ICA: fireproofs these deposits, neutralises With smooth getaway, full power in Controlled volatility in Winter them. You' 'Il feel the difference, feel A matter of seconds 8 no "warming- SHELL ensures fast smooth starts the new surge of power, before up 99 even in the dead of Winter. with only rare use of the choke: you 've finished your second tankful That'8 because Winter SHELL hag This save8 petrol, saves oil wastage, of Winter SHELL with LCA: increased volatility controlled baves engine wear: volatility. LCA stops spark plug""miss" Lead and carbon deposits also short- Shell research perfects Greater mileage circuit your spark plugs, causing from them to "miss LCA: makes the controlled volatility every galion deposits non-conductive to electric- Shell research has perfected a mean8 Never is petrol wasted more than in ity, stops this power leakage: Together, pre-firing and spark plug of controlling petrol vapour pressure those minutes of trying to Start a "miss 9) can cause your engine tO to give greatly increased volatility. cold engine on a cold morning, of lose considerable horsepower. In everyday language that mean8 straining to full power while it Winter SHELL with ICA: (Shell's that you get easier cold weather sluggishly warm8 up: Not with patented Ignition Control Additive) restores this power: Change tO starting and greater winter petrol Winter SHELL F a touch of the Winter SHELL the most powerful economy: 8tarter 1 and you re awayl petrol you can buy ! The most Powerful Petrol You can buy ! SL,ZF