I have a 2008 CK20s HST and I'm at the 200 hour service interval. I changed the engine oil and filter and was wondering how much hydro fluid will i lose changing the other 2 filters. I loosened the hydraulic filter, the one underneath the tractor, and the fluid started pouring out. I waited a little bit and it didn't quit so i tightened the filter back up. I don't want to take the trans filter off and get fluid all over the place. I was wondering do I have to drain the fluid to change the filters?