info on brands tt well insulated

Thank you! I have a 91 Dodge cummins w/ 5 sp a mild chip, air bags, and pack break.I pull a 22' flatbed w 2 T. hay and also a 14' dump trailer, and 4 horse loaded trailer. I go loaded from central Az to Colo. over Wolf Creek pass. LOVE THE CUMMINS!!~ Nora