mrc 727 #1 Posted May 23, 2014 hi men, i believe the service change interval for dino oil is 100 hours in a hydro wh tranny.. if running synthetic oil how long can you go? thank you mike in mass. Share this post Link to post Share on other sites
squonk 38,965 #2 Posted May 23, 2014 I don't know but I run Mobil 1 10W-30 in my Sunstrand and change it every year regardless. I do it right after the big Show is over. Share this post Link to post Share on other sites
Kelly 1,028 #3 Posted May 23, 2014 For most people 100 hours is about 2-3 years, so I'd say change it every 100 hours, I run Mobil 1 in my hydros, you probably could do a filter change and top it off at 100 hours then change it all at 200 hours, but $40 for a oil and filter swap is cheaper than a couple hundred $$ used trans swap. Share this post Link to post Share on other sites
