BAZEAWAY Report post Posted May 13, 2012 I have two small leaks in the radiator of my 2000 American Tradition, found during a service inspection. No overheating, no leaking on the ground. Cummins dealer says replace the radiator but wondering if some sort of stop leak product is safe to use and would work. Starting on a long trip. Share this post Link to post Share on other sites
wolfe10 Report post Posted May 13, 2012 Don't use stop leak-- too many small passages to clog up. Engine repair is a LOT more expensive than radiator repair. Have a reputable radiator shop that works on OTR truck radiators (not engine shop) look at it with you to make a determination of what needs to be done and the relative prices. Share this post Link to post Share on other sites
