I cling to this website since my Prevost is a 1980 and has a 6V92. I get great advice on the gutts of this bus, but for "Freds" and other old Prevost owners like me that happily lurk among the 4104, 4106, Flix gang, I found a great place to get Prevost oriented service. Jeff Rowe of East Tennessee Luxury Coaches worked for Prevost for 20 years but has his own shop about halfway between Chat and Knoxville. First class shop and experienced technicians but he only works on Prevost. He knows I think everything Prevost, but is reasonably priced. He has power to plug in if you have to wait for a part or need more than one day to resolve your issues. I was just there for 3 days. Did everything I asked and more. He has a website and if you live east of the Mississippi, you might look him up.
Prevost buses do need somebody that knows Prevost and Jeff fills that void . they are not the most simplified bus to work on, the later models anyways