T&T: Temperature gage Variation

[Mark Richter]

Brian,
Yes, the voltage the engine is getting will have a small effect on the
temperature gage reading.  I notice the same effect on my John Deere 80
horse 4039DFM (natural).  You will get used to it, eventually.  If it
bothers you, you could add an integrated circuit voltage regulator at the
panel input (but connect the voltage meter before the regulator).

Mark Richter, m/v Winnie the Pooh
Mark's Mobile Marine, Ortona, FL on the Okeechobee Waterway