jonepeer 2 #1 Posted July 11, 2016 Ok I'm new to the horse club I have an 88 520h with 447 hrs What is the recommended oil for the hydro? And then for the motor 20h Onan Share this post Link to post Share on other sites
can whlvr 993 #2 Posted July 11, 2016 whats in the tranny now,is it engine iol coulor or red like tranny fluid,it should have had 10-30 motor oil,put a good synthetic and new filter(that's if its gold in coulor,if its red then a good quality transmission fluid,i would run 10-30 in the onan too and put a new filter,make sure you get a hydrolic filter for the tranny,not an engine filter,i think napa number is 1410 for the tranny 1 Share this post Link to post Share on other sites
Ed Kennell 38,746 #3 Posted July 11, 2016 This may help. 2 Share this post Link to post Share on other sites
