The dash gauge on my 8V92 is not very accurate. I rely on my VMSpc which takes its readings directly from the DDEC. I really don't pay any attention to temps below 195 during hot weather at speeds above 65 or in the mountains. 200 is where I start paying close attention and at 203-205 I am slowing down and downshifting to get the temp back down. I know that leaves me some headroom as the DDEC will allow the engine to run until it gets to about 213-215 before it shuts the engine down (note for those with mechanical engines, that shutdown protection does not exist).
The last thing I want to do is spend $25k on a Reliabuilt engine (Detroit's remanufacturered engine).
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