Originally Posted By: motor_oil_madman
Originally Posted By: DriveHard
Why not use an ISO 68 hydraulic fluid? It would perform better in this application. Engine oil is only specified because it is easier to obtain.
Says not to use hydraulic fluid, but is this because people might use the wrong kind? Looks like their is three different thicknesses, iso68 being the thickest.
Yup, they specify engine oil because it is easy to get, and there is a higher chance people will choose the correct viscosity. I will say that an SAE crankcase oil of weight 50 is a THICK hydraulic fluid and might be hard to find...I think it is equal to an ISO 150 or 220 grade hydraulic fluid. If it was my machine I would be running the ISO 220 hydraulic fluid.
UNLESS you run it in the winter...then you might want to stick with the multi-grade oil.