The service manual for my (1988) 843 bobcat says you can use 5W30 motor oil for hydraulic fluid. So my question is, it OK to use a full synthetic or synthetic blend of this oil? What would any pros or cons be? Also, I can't seem to find what type of oil is spec-ed for the ISUZU engine (54 HP 4 cylinder) Anyone know? Thanks!
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bobcat 843 hydraulic oil and engine oil question
- Thread starter brennandc
- Start date
15w40 in the engine. As the hydraulic, bobcat use to say 10w30 could be used in a case of emergncy, but always pushed the use as bobcat hydraulic/ hydrostatic. I know plenty of farms that solely run 10w30 with no problems. I don't think there would be any gain in running synthetic in the hydraulic
firedude26
Active Member
my manual for my 743b says 10w30 in hyd, only advantage i see for using syn in hyd is if you was in a cold climate. i used syn in crank case that helps alot on cold starts. i need to add hyd fluid to it and was wondering samething, since i bought it used im not sure what is actually in it.
crewchief888
Senior Member
as of 2006 bobcat no longer recommends engine oil in the hyd/hydrostatic system.
engine oil formulas have drastically changed over the years, as have some hyd oil formulas
:drinkup
engine oil formulas have drastically changed over the years, as have some hyd oil formulas
:drinkup
firedude26
Active Member
so reg hyd fluid is used now? or is there a special kind of hyd fluid? i wanna change the fluid and filter in this machine, just so i know whats in it.
willie59
Administrator
A good quality AW hyd oil will work fine. Being in SE Michigan, might want to use AW32.
crewchief888
Senior Member
bocat hyd oil, along with bobcat filters is all i can recommend
:drinkup
:drinkup