I recently bought a Mule 2510 and it is great! It's gas not diesel. Works perfectly for my hunting needs and for around the farm. Anyway it is really cold blooded and takes a while to warm up. It does run well when it is warm although after it has been running a while the idle starts to speed up which makes shifting into gear hard. It also idles high enough that I don't even have to give it gas to make it go. I was just wondering if anyone had an idea of what was going on with it. thanks.