How hot is too hot

[Pro Flo]

I towed my trailer empty 6500k about a 1000klm trip and while climbing a hill in the snow in 4x4 doing @ 60klm the tranning went to @230 and I heard a howling sound,I thought it was the clutch fan but was loud and never heard it before....what could it be? I have to go back in the morning

[Goose350]

That pretty hot. I would have stopped before I hit 200. Check your fluid and see if it smells burnt.

[Dusten]

i think 225+ is a danger zone on it, i'd change the fluid just to be safe. 200 doesn't scare me. spartan has my alarm set on my DD at 225.

[Pro Flo]

I had the tranny serviced before I left....hope they topped off properly,I,ll go check the fluid.

[Ryan Rønning]

Be sure that you do. If its burnt change it.

Anyone know how big the cooler on the 6.4's are?

[Pro Flo]

I went out and checked it fluid is red and doesn't smell burnt...now would the fluid be a different colour if it was burnt?

[jesilvas]

The howling was probably your fan clutch engaging.

[Ryan Rønning]

Originally Posted by Pro Flo

I went out and checked it fluid is red and doesn't smell burnt...now would the fluid be a different colour if it was burnt?

Your fluid should be fine then. If it is having trouble staying cool you may want a dealer to take a look as I have not heard to much of the 6.4's overheating.

[Pro Flo]

Thanks for the repliesI'll get my dealer to check it out when I get back....Thanks again

[ZeroOne]

This is out of the blue a little... but there was mention in the Ford documentation that the fuel cooler can be loud, and also run when the engine is off as well (since it also cools the turbo actuator). They basically said not to freak out about it. Maybe that's what you heard? Just a thought. It may have been in the DVD.