Your problem is not a gel problem. Even bio-diesel will not gel until it is down to around 10-15 degrees. Hours running mean zero on a fuel filter. I have changed them and only got a few hours on them before they plugged again if there is dirty/water fuel in the tank.
Like one of the other guys said get some charcoal and a piece of tin. (steel garbage can lids or the shallow hog feed pans work well) Build a fire and let it get down to the coals. Then slide it under the skid steer. Put some card board or plywood up around it so the heat stays around the skid steer. I have done that several times over the years to start things that are too far away from any electric.
If your skid steer has electric shut off make sure that you do not have an electric problem. Listen and see if you can hear the solenoid work when you turn the key on and off. Had a customer burn his starter up on a Bobcat skid steer because he had no power to the fuel pump. Argued with me for half a day it had to be fuel since it ran fine when he parked and it got cold. I finally loaded it up and put it in my shop. Let it set in the heat over night still zero fire. Found a bad wire under the seat that had the fuel system shut off. Must have broken when he sit down in the seat on the cold morning.