Britain's lifi depend on i so can you When engine dependability counts above all else, Castrol is chosen because it is proved safe for all engines . . . on the sea, in the air, and on the road. No other oil can match the Castrol total of achievements. 27 airlines depend on it. Most Rolls-Royce engined jet airliners operating in Europe fly on it. Rolls-Royce and every other British car manufacturer approves it and most choose it for their Rally Teams. Over 5 million British motorists depend on Castrol ... So can you ! Britain's most successful Motor Oil - Now with 'Liquid Tungstei.