MOTOR OIL ADDITIVE PACKET AND OIL CONTAINING IT Russian patent published in 2023 - IPC C10M159/20 C10M169/04 C10M159/18 C10M137/10 C10M137/04 C10M133/38 C10M133/16 C10M129/10 C10N30/04 C10N30/06 C10N40/25 

FIELD: car industry.

SUBSTANCE: invention relates to motor oils for car engines. A motor oil additive packet is proposed, containing zinc salt of dithiophosphoric acid ethers, ashless nitrogen-containing dispersant, and antioxidants. The additive packet additionally contains low-alkaline calcium alkylsalicylate having an alkaline number of no more than 70 mg KOH/g and medium-alkaline calcium alkylsalicylate having an alkaline number of at least 155 mg KOH/g, taken in the ratio of 1:2.0-2.5, as well as benzotriazole, at the following ratio of components, wt.%: medium-alkaline calcium alkylsalicylate having an alkaline number of at least 155 mg KOH/g 15-35; low-alkaline calcium alkylsalicylate having an alkaline number of no more than 70 mg KOH/g 6-16; zinc salt of dithiophosphoric acid ethers 15-25; ashless succinimide dispersant 22-42; alkylated diphenylamine 1-11; phenol antioxidant 1-10, and benzotriazole 0.0-1.0. Motor oil based on petroleum oil is also proposed, containing the specified additive packet.

EFFECT: increase in thermal oxidative stability and reduction in precipitate formation of motor oils.

2 cl, 5 tbl