That is only half a question. What is the machine you are talking about? It could be any thing from ATF to 20W50. Be like the man I know that put John Deere Hydro fluid (thick as honey) in his log splitter and burned the pump up. Turns out the log splitter was meant to use Dextron III ATF (automatic transmission fluid). So you need to say what it goes it.its time to change mine and i would like to here what some are useing please.