Have a 2004 T300 on our farm and looking to change the oil in the final drives. Heard its a very important thing that often gets forgotten. A guy at my Bobcat dealer says they like to fill the oil all the way to the top "12 o'clock position"? Would you guys agree with that? Also whats the best oil to use and do you need to get it from the dealer only? I also noticed that one of my inner idler wheels looks like it has some cracking going on where it mounts in the undercarriage... Is that something thats repairable? Lastly do you need to do any servicing/greasing on any of the idler wheels themselves? Appreciate any info!!