Today I took my truck from the car shop. The chief of mechanics, told me that he has checked the following points of the truck: <BR>1) Thermostat : Good (opens at 80 Centigrades)<BR>2) A/T oil : ok (it is fresh and its level)<BR>3) Engine is already well tuned (uses 50% of air and 50% diesiel)<BR>4) The radiador : Bad (It is already clogged so the mechanic performed the cleaning by rodding it.<BR>5) The electric fan worked fine and at the needed time.<BR>6) The engine fan, was somewhat stucked when the engine was hot and the mechanic has resolved this problem.<BR>After this cleaning, I took a hard climibing slope test (the first time, the mechanic took my truck to test the radiator and found it raising the temperature at the end of the climbing. The third time (the second time was a test with a new thermostat in order to test the hipothesis of malfunction of it, at the end of climbing, the temperature has raised), the mechanic and I went to the same climbing test site with the radiator cleaned "rodded" and the thermostat remains cool at the end of the climbing. Ufff. Anyway, I am very satisfied to have your support with your many different advises and I learned them a lot. <P>Many thanks to the Mitsubishi Fans! [img]images/icons/grin.gif" border="0[/img] <P>Rodolfo Neuhaus