Coolant or water getting in Transmission fluid?

zero233

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What would be some ways water or coolant could get in the transmission and mix with the fluid? Recently had my rear main seal replaced and have been on the road since so I haven't driven it. Finally get a chance to drive it and there was a noticeable vibration at about 20mph. Took it back to the shop and he checked the fluid (which he said he didn't do the first time) and he said it looked like "strawberry milk".
 
You have an 06, right?
There shouldn't be any possible way for coolant to get into the transmission. The transmission cooler is in front of the radiator, not inside it.
 
Sorry yes it's an 06. Any explanation as to why the fluid would look like that? He didn't drop the pan. Just took out the drain plug.
 
Sorry yes it's an 06. Any explanation as to why the fluid would look like that? He didn't drop the pan. Just took out the drain plug.

No, that does sound like the typical description of Mercon V mixed with water. Is there any chance this car has been in a flood?
 
Any chance external fluids got into the trans via the vent hole on the housing, would be as Joe suggests, it somehow sat high in water at one point. Do believe there is an overflow or vent hole high on top of the trans.
 
Yes, there is a vent on top. Also, the bad real seal could have been an entry point too.
 
Yes, there is a vent on top. Also, the bad real seal could have been an entry point too.
I'm gonna guess maybe the shop had it parked somewhere that it may have been sitting in some high rain water. The week I had it there it was raining hard everyday. Kinda makes sense now because the passenger rear floor was soaked. There was no serious problem with the car until after they got done replacing the seal. Will a flush help at All? Or is it time for a new one now?
 
Wow ... ain't that something.
Sorry for your troubles but I'd have some words with them if it was me.
 

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