| 摘要 |
Disclosed are an agent for preventing clogging of oil filters for various internal combustion engines, the agent comprising at least one hydroxyl-containing component selected from the group consisting of: compounds represented by the formula (1) R<1>O- (R<2>O) m-H (1) wherein R<1> is hydrogen or C1 to C8 alkyl, R<2> is C2 to C10 alkylene, m is an integer of 1 to 10, and when m is 2 or more, the two or more R<2> groups may be the same or different; and compounds represented by the formula (2) <CHEM> wherein R<3> is C2 to C4 alkylene, R<4> is hydrogen or C1 to C10 alkyl, n is an integer of 0 to 8, and when n is 2 or more, the two or more R<3> groups may be the same or different; a method for preventing oil filter clogging using the oil filter clogging preventing agent, and an engine oil composition containing the oil filter clogging preventing agent. |
