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Accelo · 08-09-2022, 02:32 PM

"fairly new then truck with a 700R4 trans, it got so hot the fluid boiled up and out the dipstick tube"

May be more to the story. If it happened in a 1999 or newer Silverado it would have lit up the drivers information system. It tells the driver when it's getting hot and if it gets even warmer it says to pull over and idle the vehicle to cool it down. It would have had this warning before ever getting so hot as to boil the oil.

When the oil boils you are not going any further! The boiling temp of modern transmission fluids is roughly 570 deg F.

Yes it happens, but typically when someone is stuck or power-braking. Both can heat up a transmission to dangerous levels in minutes.
Otherwise it was typical when the transmission was slipping and they kept driving the vehicle.
Cheers.

08-09-2022, 02:32 PM	#17
Accelo Registered User Join Date: Mar 2015 Location: washington Posts: 2,162	Re: Light towing with a 700r4 "fairly new then truck with a 700R4 trans, it got so hot the fluid boiled up and out the dipstick tube" May be more to the story. If it happened in a 1999 or newer Silverado it would have lit up the drivers information system. It tells the driver when it's getting hot and if it gets even warmer it says to pull over and idle the vehicle to cool it down. It would have had this warning before ever getting so hot as to boil the oil. When the oil boils you are not going any further! The boiling temp of modern transmission fluids is roughly 570 deg F. Yes it happens, but typically when someone is stuck or power-braking. Both can heat up a transmission to dangerous levels in minutes. Otherwise it was typical when the transmission was slipping and they kept driving the vehicle. Cheers. Last edited by Accelo; 08-09-2022 at 04:14 PM.