[Fulltiming]

Newell has rarely put in pyrometers during the past several decades. Other manufacturers, such as Prevost and Blue Bird typically did install them. While they are certainly not required, they can provide valuable information, specifically in two circumstances. 1) Climbing hills and 2) shutting down the engine. In climbing hills, the pyrometer will be your first indication that the engine is generating too much heat and you should back off the throttle. After running on the freeway and pulling into a rest stop or truck stop, the pyrometer will be the best way to determine when the engine has cooled enough to shut it down without damaging the turbo. Newer metallurgy has reduced some of the shut down issues and more sophisticated computer engine monitoring and control system have reduced the potential to overheat an engine under full throttle but pyrometers are still a good way to monitor engine operation.