Oils have probably never been changed in many years. I'm sure JD is going to be expensive and wondered if there was something of good quality but a little less money? Jim
My bil only uses JD hyd and engine oils in his tractors. He's had JD tractors since the 1960's. We still have the 2 original 4020s . and have 3 others much newer , 2 of which have the unappealing dpf . The cheap oils can cause misery with wear . It's like the Clint Eastwood movie... "for a few dollars more." Peace of mind is a good feeling.