changing the oil in the hydro

well just got back from town with bag of goodies. for the 2389 my hastings book calls out a LF134 for the oil filter, LF142 for the hydro filter. napa is not open on sundays so off to autozone i went. the LF134 crossed over to a fram PH3600, the LF142 crossed over to a fram PH16. from what i've read the PH16 is a 20 micron filter so that should be good till this spring or early summer when i change it again as it has been a while since i've changed the filters. i also bought some universal tractor fluid that said something about hy-guard jd20. i'm going out on a limb here and assume that is just a 20 weight oil? i've not gone out yet but i'm thinking the PH16 might be shorter than the one i have on there now, but like i said it's been a while since i was under there. wish me luck. heading out there now to start draining.

I would check on the proper hydro filter number from bolens. The filter you have has a bypass valve in it. Don’t know about the ht tractors, but I have a 5019h eliminator with the eaton 11, and bolens specifies a non bypass filter. that way if the filter gets dirty, you will notice a reduction in performance and the dirty oil is not bypassed around the filter to the hydro. The napa 1410 filter is probably the right one as it does not have a bypass valve. That is the one I use also.