I am the proud owner of my great-uncles 1967 MF135 deluxe with the Perkins. I remember my uncle telling me he always burned kerosene in it so he did not have to worry about the fuel gelling up in the winter. He said for the little bit less power he had it was worth it in his opinion. I have had people tell me to never burn kerosene in it because kerosene does not have any lubricants in it and it will mess up the injector pump. Others tell me to mix it half and half with diesel. I have been running straight diesel in it and adding an additive for the winter to keep it from gelling since I owned it. A previous post talked about a hard starting MF135 in the cold and I noticed since I switched to diesel it definitely does not start as easy in the cold as it did with the kerosene. So does anyone know if kerosene is safe to burn in this tractor?