Engine/Transmission (1994 - 1998) engine temp

[kkriz]

Hi, ya'll! I'm new to the TDR and to CTD ownership. I have a 1997 Ram 2500 with 155K miles and the temp gauge would never get much above the 140F mark. I replaced the thermostat yesterday with a Stant 180F stat and the temp will reach the 190F mark but now it fluctuates between 190F and about 160F. Is this going to be harmful to the motor?

 

[radixr]

No. This is normal. Cummins has a different theromostat available that is reported to eliminate the fluctuation but using it only provides psychological benefits to you. Your engine doesn't care.