The coach I just got only had about 1,500 miles on it since January 2017, and when I took it to FOT from Houston it started surging and loosing power about the last 50 miles.<br/><br/>While they are working on it I am going to have them change out the fuel filters on the engine and generator.<br/><br/>What are good or popular brands of biocide?<br/><br/>Should I also be using some injector...