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Antifreeze coolant in transmission oil cooler

Tiny
EKIE
  • MEMBER
  • 1989 TOYOTA RAV4
  • 2.0L
  • 4 CYL
  • 4WD
  • MANUAL
  • 367,000 MILES
I have the problem that antifreeze is coming out of my transmission oil cooler line connections. The transmission oil cooler (aftermarket) is not integrated in the radiator so I wonder how antifreeze can get into my transmission. In my opinion it can only be a cracked engine block although I do not experience any other leaks out of the engine itself.
Thanks for your help.
Eike
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Wednesday, March 18th, 2020 AT 7:44 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Is there a cooler in the radiator?

The only other way is if someone added coolant instead of transmission fluid.

You need to change the fluid right now and get all the coolant out. You may have to change it several times to be sure. Coolant in the transmission will ruin the clutches and cause it to fail.

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Roy
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Wednesday, March 18th, 2020 AT 8:10 AM

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