So, I finally got my Ariens Apex ZT mower after a fiasco with Lowes. It has the 24HP Kawasaki FR730V engine and the ZT-3100 hydros. Let's start off with money: since I plan on changing the oils and filters once a year, $100-125 for fluids & filters is not going to be a big deal even if it means I am over maintaining it. But I have several oils on the shelf that "would" possibly work. So here's my choices, let me know what you think. Kawasaki 10W30 oil, Kawasaki button-sized oil filter, Kawasaki air filter, HydroGear 52114 filters and HydroGear 15W50 hydro oil is OEM. 1. Delo XLE or Rotella T5 oil or Motul 4100 15W50, VPB 10W30 (all currently on my shelf), Amsoil 10W40 Small Engine Oil, or? 2. XG3614 oil filter (OTS), NAPA Gold 7035 hydro filters, or? 3. Amsoil 20W50 hydro oil, or? I'd imagine yearly usage will be somewhere around 100 hours; I know the manual says oil change every hundred hours and filter every 200 hours, but this is BITOG and I want something to do in the garage once winter hits, so I will be changing all three filters and oils every winter. Do I go all-out and get Amsoil fluids and low-micron filters, or use cheaper "spec" oils and filters which are rated 25-28 micron? For reference, oil change is 2.2 quarts with filter, and hydros are about 2.5 quarts each with filter. So three filters and 2 gallons of fluid total per winter. Who has the most hours on an FR730V and/or ZT-3100s, and what was your maintenance regimen?