Diesel Engine Lubricating Oil: -
The main function of lubricant for diesel engine is the same as mentioned for gasoline engine. As the load in diesel engine is much higher it should have adequate antiwear properties. Diesel fuel contains a high level of Sulphur which burns to form oxides of sulphur , which in turn in the presence of water, form sulphur acids resting in high corrosion of engine parts. Hence the need of alkalinity reserve in the oil which is represented by its TBN or Total Base Number. Generally, the higher TBN value more the alkalinity reserve or acid neutralizing capacity the oil contains
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