Bobcat Enterprise endorses making use of high-grade oil that meets or exceeds the API classification of the engine. each write-up are mostly right. my onl issue is don't make use of the gaskets. they do not do the job. oil will wick out .i poly seal (dealer should have it) https://gunneropnml.creacionblog.com/27164991/5-simple-techniques-for-types-of-hydraulic-fluid-for-bobcat-753