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535_BiTurbo 535_BiTurbo is offline
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Default Transmission - 08-02-2020, 09:47 AM

What are the normal operating temps on the 8hp70 trans?


2012 550i M sport - JB stage 1
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Mike_L Mike_L is offline
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Default 08-03-2020, 07:08 PM

Most 8HPs are happy around 215F. I don't have a 70 yet, but thats where the 8HP45 sits at during normal driving. It MUST get above 212 to boil off any condensation, so that seems about right.

The Mopar guys are saying their 8HP70 Rams run at around 190 during normal driving and 200 when towing. That seems a bit low to me.


Mike Levy
2021 Tanzanite Blue II M550i - 8/20/20 build date.
2017 Carbon Black X3 xDrive35i
2018 Silver Equinox LT 2.0T

Last edited by Mike_L; 08-03-2020 at 07:16 PM..
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