First and foremost, am I gonna get covered in all my transaxle oil when I spin the filter off to change it? Also, any oil you'd all suggest for the rear end/hydraulic system other than the JDM 20 oil listed at john deere? I'm thinking of doing a jacket water heater if ones available, so I may do a coolant change too. Anyone got a good heater kit to point me towards? As well as any other "beware of's" or anything? Tractor only has 75 hours on it.