Welcome, longhorn. According to my brother who drives a Peterbilt, n2 has more parafin in it, thus giving more lubricity. This is fine for all the time when the weather is moderate. However when n2 gets cold (below freezing somewhere), it can wax up in your filter and shut you down. In the winter months, most fuel distributors will blend some n1 into the n2 to thin it a bit. The n1 is thinner with less parafin, so it burns quicker. Anyone else?
