On Jan 19, 2013, at 11:01 PM, Mike Meulenberg wrote: > I have a Massey 255 with a Perkins 4 cylinder diesel engine. The > problem I'm having is it never seems to warm up. Try an oven thermometer wrapped to the radiator inlet hose with a rag. Roy Roy Morgan k1lky at earthlink.net K1LKY Since 1958 - Keep 'em Glowing!