Thanks for all the great replies. Took a bit to get back out and look at the oil. Enclosed are two pics and the only spec sheet I could find. Nothing really said about "universal" fluid. Looks like it might be a low-grade DoItBest product. Any thoughts greatly anticipated.
Jim
No good deed goes unpunished. Borrowed my 1971 JD500 loader/backhoe to neighbor for several days. It had very few hydraulic leaks mainly only on the loader valve a pressure relief valve would weep. Nothing serious. Neighbor returned unit and made comment a little leaky but runs great. Didn't...