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Shell Fuel is Capital Airlines' choice to power the Rolls-Royce turbo-prop engines in their new Viscount Airliners THIS CHOICE by Capital Airlines is the result of carefully compiled records during exhaustive tests with these engines. Shell Fuel is extremely stable...it burns cleanly, at high efficiency, at all operational temperatures and under all flight conditions. It meters precisely at all altitudes. It sets a high mark for turbo-prop fuel economy. We'll be glad to provide further information. SHELL OIL COMPANY 50 WEST 50TH STREET, NEW YORK 20, NEW YORK 100 BUSH STREET, SAN FRANCISCO 6, CALIFORNIA. 56 [[Image]] SHELL OFFICIAL DIRECTORY and LOG