MY L2502 land on Dec 21. Damn I forgot to get the dealer to install a block heater. I tested it cold start at 0 c 32 F. It turned over quick and started. It ran ruff and smoked for 45 seconds. I'm ok with that. I will install a block heater the next time I have it in for service but until then if it gets cold and I"m going to be using the tractor the next day I will put an electric household header under the motor and block it in with styrofoam. I did this before with another machine I had and it worked amazing at - 40 Celsius. I use to leave the heater run overnight but I do believe running the electric heater for 2 hours would do the same thing.