Petroleum products used in tractors are divided into these groups: fuels; lubricants and greases; protective materials. These products have to suit machinery design, methods of farm operation, and climate. The arduous conditions have resulted in development of improved oil products, and details of original research are given.
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References
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BatesE. S., ‘Technical Developments in Tractor Lubrication’.
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MercerA. D.WormwellF., Symposium by Corrosion Group of Society of Chemical Industry, ‘Research and Experience with Sodium Benzoate and Sodium Nitrite Mixtures as Corrosion Inhibitors in Engine Coolants’.
