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Aviation History
1950
1950 - 0562.PDF
FLIGHT 23 MARCH 1950 Why Castrol is " HERE ARE THE REASONS T HE properties of the modern Castrol have been proved in a practical manner which is open tono other oil—it has already been used and found ideal by the majority of motorists in Britain. The constituents *' which make Castrol unique as a lubricant are:— 1 2 3 Compounds of chromium and tin (the first of their kind in the world) which protect cylinder walls and piston rings from corrosive wear. Mildly detergent additives which cleanse car engines from harmful carbon deposits. Cleansing agents were included in Castrol ten years before they became generally popular, and this advanced knowledge has proved invaluable in the development of the additives now in use. Oxidation inhibitors, which minimise sludge formation, first included in Castrol as far back as 1936, and since that time greatly improved. Unrivalled experience ensures that the additives in Castrol are perfectly adjusted to the "additive susceptibility" of the basic lubricating oils. Thus motorists receive a lubricant which always incorporates the latest advances in oil technology. / ^ Alkyl dithiophosphate Aryl dithiophosphate Naphthene sulphonate in combination with Chromium, Tin and Zinc. This is why most British motorists say
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