Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Hello, I drive a big truck and I like efficiency

DieselFan · 09-08-2011, 09:36 PM

Thanks to both Diesel Dave and Slowmover.
Both of you have thermostats that open around 190 F from your answers.
Mine opens at 181...
I also fully agree with your detailed opinion slowmover, these engines should not be tampered with unless you know what you are doing and they are very well designed to start with.
My reason to want to change thermostat is simply to obtain same temps as others are!
Strange enough, I went to a parts store selling only truck parts and for my engine he told me that Cummins only lists the 180 F thermostat.
Mine is the HO 305 hp ISB 5.9 L in 2003 vintage.
How come yours have a different thermostat? Do you have a different engine? Is is the standard output or a different year?

Diesel Dave, the three part# you gave me would be for which engine precisely?

Many thanks guys.

09-08-2011, 09:36 PM	#39 (permalink)
DieselFan Diesel Fan Join Date: Aug 2011 Location: Quebec, Canada Posts: 9 Thanks: 13 Thanked 0 Times in 0 Posts	Thanks to both Diesel Dave and Slowmover. Both of you have thermostats that open around 190 F from your answers. Mine opens at 181... I also fully agree with your detailed opinion slowmover, these engines should not be tampered with unless you know what you are doing and they are very well designed to start with. My reason to want to change thermostat is simply to obtain same temps as others are! Strange enough, I went to a parts store selling only truck parts and for my engine he told me that Cummins only lists the 180 F thermostat. Mine is the HO 305 hp ISB 5.9 L in 2003 vintage. How come yours have a different thermostat? Do you have a different engine? Is is the standard output or a different year? Diesel Dave, the three part# you gave me would be for which engine precisely? Many thanks guys.