FIELD: liquid fuel additives. SUBSTANCE: invention relates to additives intended for compensation of wear of cylinderpiston group parts, for fuel stability increase, and to reduce specific expenses on fuel. Additive contains at least one ionically-bound copper compound and at least one ionically- bound zinc compound, copper-to-zinc molar ratio being 1:(0.03-0.70), and additionally contains at least one organic substance assisting to dissolution of metal salts in hydrocarbon fuels. EFFECT: reduced fuel knock tendency, reduced exhausted toxicity, reduced fuel consumption, and compensated wear. 7 cl, 1 tbl, 5 ex
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