If it was a gas operated engine I might consider buying one, but in my case,one of the primary reasons to let it idle and warm up would be to get heat from my heater to warm up my cab in the winter. As you know, diesel engines in the kubota or even my John Deere tractor do not give off much heat when they idle. I f you use the hand throttle I suppose it would help but then that means you have to be in the kubota to do that which sort of defeats the purpose for me.</p>