I just aquired an old 1966 Case Compact Tractor that is a hydraulic run and hydraulic driven gear box. It calls for a 20w40 Motor Oil of MS or DM Service Classification Oil that has passed the AMA Test Sequences of I,II,III.
Question... is this a non-detergent motor oil or a special type of motor oil? And would it be wise to stay with this type/grade of motor oil or switch up to a SAE 50wt Hydraulic oil? If there is such a grade or what grade hydraulic oil would you use?
Question... is this a non-detergent motor oil or a special type of motor oil? And would it be wise to stay with this type/grade of motor oil or switch up to a SAE 50wt Hydraulic oil? If there is such a grade or what grade hydraulic oil would you use?