I own a Kubota L3240 and have read in the owners manual that #1 diesel should be used when the temperature drops below 15 deg. f. Does anyone know whether #1 has the same gelling problems in the cold as #2 and what additives do most of you use with #1 in the winter months. This is my first tractor which I bought a few months ago and I'm planning my winter strategy. Thanks for any info!!!!!!!!