We're about to make a 3000+ mile trip and just wanted to get some input on diesel fuel quality across ND and MT. I updated my truck with improved filtration, primarily due to prevention and a couple of bad experiences with water laced biodiesel from BP (MN & IL). Kwik Trip (premium) and Cenex (Roadmaster) seem to have worked very well going through IA, MN, & SD, but just not familiar with MT stations. The SD stations I was at did not have biodiesel which was fine. Will likely go Bismarck, Minot then highway 2 to Glacier and south past Missoula - Billings on I94 for the return. Thanks.