Air-cooling two-stroke gasoline engine oil composition for EGB and preparation method thereof

The invention relates to an air-cooling two-stroke gasoline engine oil composition for an EGB and further relates to a preparation method of the air-cooling two-stroke gasoline engine oil composition for the EGB. The air-cooling two-stroke gasoline engine oil composition is prepared from the following components in parts by weight: a) 25 to 45 parts of base oil A; b) 30 to 50 parts of base oil B; c) 5 to 20 parts of base oil C; d) 0.05 to 2 parts of a detergent; e) 1 to 10 parts of a dispersant; f) 0.01 to 1 part of a friction modifier; g) 0.01 to 1 part of a pour point depressant; h) 5 to 20 parts of a diluting agent; the friction modifier adopts a boron-nitrogen compound; the boron-nitrogen compound is prepared from raw materials including acid with a long carbon chain, organic amine and boric acid; the boron-nitrogen compound adopts a boron-nitrogen compound with the boron content being 1.4 percent and the acid value less than or equal to 10mg KOH/g. 本发明涉及种EGB风冷二冲程汽油机油组合物，还涉及种EGB风冷二冲程汽油机油制备方法，以重量份数计包括以下组份：