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Detroit Diesel 8v92 Engine/Allison 4 speed operating parameters

Hi all,

lets help each other and newbies with what are the operating parameters for our engines and trannys. once we get a kinda consensus and list of things and ranges, i will collate the data into a single post. no warranties implied, use data at your own risk, etc.....just our combined experience.

please add as you want, what you want to know and what you do know

also if you are referring to the gauges or the vmspc (ddec)

Engine Temp
Oil Temp
Trans Temp
Oil Pressure
Turbo PSI

Also how to operate the Allison tranny optimally.


2002 45'8" Newell Coach 608  Series 60 DDEC4/Allison World 6 Speed HD4000MH


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