Basic oil and torimechirorupuropanesuteru which full-time belong to

摘要

PROBLEM TO BE SOLVED: To obtain a lubricating oil composition for full time four-wheel drive transfer.;SOLUTION: A composition containing 5-20 mass% base oil belonging group-3 in the API base oil category and trimethylol propane ester, 0.5-5 mass% di-alkyl dithio phosphoric ester containing a carboxylic acid ester having a specific structure and 5-20 mass% sulfur-phosphorus based extreme pressure agent is used as the lubricating oil composition for the full time four-wheel drive transfer. As a result, excellent extreme pressure property, durability, seizure resistance, synchro characteristic, stability and fuel saving property are attained.;COPYRIGHT: (C)2009,JPO&INPIT