In the last few days I've done the following to the 2010 RTV 900 that I just bought. It just turned 50 hours so I changed all the filters, changed the engine oil to Rotella full synthetic 5w-40. Checked tire pressure and lug torque. Tightened the throttle cable so the engine speeds up just before the tranny engages. Drained the fuel tank and changed the fuel filter (Suggest removing plastic panel for easier access). Got fresh diesel and added PS Diesel Kleene +Cetane Boost and Sea Foam. Installed Seizmik rear view, side view mirrors, and Velcro handle, installed 2-50watt halogen lights, front and back, just under roof canopy, float charger on battery, 3000# winch on front. Screwed a tough flexible plastic piece on dashboard panel at ignition switch to prevent knee from hitting key. I had cleaned the spark arrestor but then decided to remove it. Took off the tailpipe and used a Dremel tool to cut it off at the welds so I can re-install it later if necessary. Used anti-seize on the tailpipe screw threads. Now that made a difference in power from a standing start. Installed some 5/16" quick (chain) links on the passenger seat belt anchors so I can clip in a car seat for my 2 year old grandson. He loves it. My 9 year old granddaughter also loves it and I've let her drive it with me next to her. Would like to get a hood rack, but I'm not going to pay $300. Thinking about adding some sound insulation under the dump bed and engine compartment. That's all for now.