POLYFUNCTIONAL ADDITIVE TO ENGINE OILS Russian patent published in 2012 - IPC C10M135/18 C10M137/10 C10N30/10 C10N40/25 

FIELD: chemistry

SUBSTANCE: The invention is used in oil production for highly boosted petrol engines, turbocharging diesel engines and their further operation. The additive contains a 50% solution of the mixture of amine salt and dialkyltiophosphoric acid amide solved in oil - ADTF additive and tetraalkyl thiuram disulphide taken with the ratio to ADTF ranging from 1:3 to 3:1, whereas the mass portion with the atomic ratio of sulphur to phosphorus in the additive ranges from 3,25 to 11,55.

EFFECT: improved anti-oxidising properties while retaining anti-wear and anti-friction properties, at the same time reducing the amount of sulphur, phosphorus and sulphate ash content in the oil, which increases the interval between oil changes and the engine working capacity between repairs.

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