maybe its just me but every auto i have ever owned  i would slip into neutral  at a stop light, esp if i knew it was a long light

when you install the guage you will see why i have always done that

and  i dont know the 340 well enough to say if it has a npt fitting on it or not

Well, I flushed the tranny last night. No clue on how long its been or if its ever been done. It was pretty cloudy though. I put some fresh stuff in with a bottle of Lucas as well. Also ordered a Derale tranny cooler with built in fan and thermo switch to keep it at 170-180 degrees. I think I'm just gonna wait on the temp gauge and see how often that fan has to kick in. I'll just run it in line after the radiator. Now to find a place to mount the damn thing.

Anyone have a good place to mount a 10"x16" cooler that will not fit in front of the radiator???