Type of Fluid for 3-point hitch Forum › Forums › Tractor Operation And Maintenance › Type of Fluid for 3-point hitch This topic contains 2 replies, has 3 voices, and was last updated by Bob Rooks 2 months, 2 weeks ago. Author Posts August 29, 2017 at 2:07 pm #47197 jonesgroveParticipant Offline what fluid goes in the fill hole on top of the 3-point hitch piston box? AW 86 or 40? August 29, 2017 at 7:13 pm #47198 DavidPrivettParticipant Offline if your tractor has a common sump as diff. trans, hydros ,power steering, universal tractor fluid is ok. If hyrdos only aw-32 is ok as long as you are not running in extreme heat conditions then aw-46 I would think. August 30, 2017 at 10:31 am #47199 Bob RooksParticipant Offline jonesgrove wrote: what fluid goes in the fill hole on top of the 3-point hitch piston box? AW 86 or 40? Quote There is no such product as AW86 or AW40. Where did you get this information? As David asked, does your tractor have a common sump? Yuchai dozer, Mustang skid steer, Mitsubishi mini-ex, Dual Dozer w/twin laser receivers, '50 Ford COE transit mixer. Author Posts You must be logged in to reply to this topic.