Hi all,

I have a 99 F350 4x4 dualie diesel longbed that I use to tow a 5th
wheel. I recently added some gauges to watch the tranny temp, and
installed a auxillary tranny cooler. I asked about all this here a
couple of years ago, and finally got around to installing the cooler.
Another recomendation was to use synthetic in the tranny. Thanks for
all the help.

Okay, as for transmission temps, they are pretty amazing. I never saw
the temp go over about 180, and this was in a 100 degree day, pulling
the 9k# fifth wheel up a 10% grade. THe tranny never broke a sweat.
Typical temp was <150.

However, one of the guages I installed was a EGT gauge. I put it after
the turbo (I know, I should have put it before), but it's after. My
typical EGT range in standard driving (no load) is between 500 to 750
degrees. On that long 10% grade under load, it went to about 1050.
Started making me nervous, but I have no idea what kind of range of
temp is okay.

So, at what point should I get worried? I went from a tranny
overheating to worrying about the engine EGT.

thanks for any help,

Fred