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Aviation History
1937
1937 - 0929.PDF
APRIL 8. 1937- ADVERT1SEMENTS. FLIGHT. SUPPLEMENT vii. She's a hiker... WHY SHELL SUITS THE MODERN ENGINE. All motor spirit consists of atoms oi hydrogen and carbon. In ordinary petrol these atoms take the form of long chains, in which formacion they combine irregularly with the oxygen from the carburettor. This produces rough running and "pinking" in the modern engine. Shell rearranges these atoms into compact groups by the " re-form ing" process. In this formation they combine evenly with the oxygen. Thus combustion is con trolled and "pinking" prevented. This girl would be a good walker, if only her clothes would let her. Some petrols suffer from the same handicap; they've got the essential power but not in a form in which it is most effective in the high-com pression engine. Shell, on the other hand, is really good petrol made still more suitable for the modern car by the new "re-forming" process. YOU CAN BE SURE OF SHELL Kindly mention "Flight" when corresponding with advertisers.
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