I run 15W40 in my engine, i run 20W50 in my hydraulics for the reason that i received a very good offer on it. Now the next offer rolled about for 15W40 (a little bit above two bucks a litre), future oil change, is't being changed to that These fluids https://zionffumw.blog-gold.com/33451654/types-of-hydraulic-fluid-for-bobcat-753-an-overview