| 摘要 |
PROBLEM TO BE SOLVED: To provide a lead-free gasoline exhibiting a sufficiently excellent IVD production-inhibiting effect. SOLUTION: This lead-free gasoline is characterized by containing 50 to 500 volume ppm of a cleaner comprising a polyether amine-based cleaner and a polyisobutene amine-based cleaner in a volume ratio of 25:75 to 50:50, having a certain research method octane value, motor method octane value, Reid vapor pressure, oxygen content, aromatic content, olefin content, benzene content, and sulfur content, and further having a multi-cyclic aromatic index (Y) of≤6 represented by a certain expression. COPYRIGHT: (C)2008,JPO&INPIT
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