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Discussion Starter · #3 ·
That's what was thinking at first but it doesn't have the texture of coolant.
I am thinking it might be SMG/transmission fluid.
 

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Put a drop in a glass of water. If it dissolves, it is coolant. If it floats, it is an oil based fluid.
 

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Ajax would have posted a pix of a bikini clad babe dropping oil in a glass of water, but all the babes have this week off.
 

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Ajax is always happy to help!
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I had the identical thing under my car.
Ended up being a SMG line had split.
My pump would run all the time trying to pressurize.
And it would leak onto the floor.
They had to drop my tranny to fix it.
Hope yours works out better
 

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Discussion Starter · #11 ·
I had the identical thing under my car.
Ended up being a SMG line had split.
My pump would run all the time trying to pressurize.
And it would leak onto the floor.
They had to drop my tranny to fix it.
Hope yours works out better
Thanks!
That makes sense. For the last few weeks I have heard a pump sound keep coming on. I took it into the shop and naturally they said they couldn't find anything. I guess I'll be taking it back telling them exactly what is wrong.
 

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My pump would do the normal cycling.
So some cycling is a normal thing.

But then I noticed it was way more often.
And I had a low battery warning that they couldn't find the root cause of.
This happened 3 or 4 times. Then one day the car died, woulndt shift gears etc.
Towed it in and it was the smg line.
When it was trying to hold pressure it was killing the battery over night etc..
I had only gotten small drips like yours about a week prior.
So the sooner the better that they find the line before you get stuck somewhere.
Hope that helps.
 

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Discussion Starter · #14 ·
Just picked up the M6 from the dealer. The Fluid Leak ended up being coolant leaking from the "radiator outlet temp sensor." It was a pretty easy fix.

FYI, the coolant was extremely corrosive. It stained all the way through the epoxy flooring on the garage. But at least I have a fixed vehicle!
 

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Coolant should not have any corrosive attributes.
 

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Temp sensor leak

Just picked up the M6 from the dealer. The Fluid Leak ended up being coolant leaking from the "radiator outlet temp sensor." It was a pretty easy fix.
I have just noticed the same leak.
Couple questions:

Does anyone know if the temp sensor has an O-ring that can be replaced?
Is it usually the temp sensor that needs to be replaced, the upper radiator hose, or both?
Do you have to drain the entire coolant fluid in order to replace the sensor?

Pic of the leak area:

image.jpg

Thanks for any help or advice you can give!
 

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Temp sensor diagram

Temp sensor #10 in diagram

image.jpg
 
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