I would like to add what Nixon has to say. I had a dipstick heater on a car back in the early 80's. After about a month I noticed caking on the dipstick. It wasn't long and the heater actually burnt out from the caking and the heater would overheat. As far as helping the motor start, yes they do but I would never use one again based on experience. I would get your self a good block heater or inline water heater. Kubota does make a block heater, I would just get that as it is designed by Kubota. Yes it will be more expensive but your Kubota is not a toy, it is something you will hang on for a long time.
murph just kind of sneaking over from the blue side /forums/images/graemlins/smirk.gif