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Old 02-19-2014, 03:40 PM   #1 (permalink)
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Default 3.6R Engine Fluid Leak/seep

Hi All,
New member posting for the first time.... I did try and search for this in other threads, but I think this leak is in a different location to those I read about. The pic is fairly self explanatory. Front upper part of engine, you can see dipstick in picture. First noticed at 40k. Dealer cleaned up suggesting it may have been spilled during oil change and said keep an eye on it. Now at 56k and still seeping (not enough to drip down to floor). Does anyone want to suggest the cause of this? How bad does it need to be to qualify as a warranty issue? And what I should expect as a remedy? I just want to be a bit better informed before I go back to the dealer.
Thanks.
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Old 02-19-2014, 03:59 PM   #2 (permalink)
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Who's been changing the oil on your 3.6? It very well could be a previous spill...........a primary reason that I perform my own periodic maintenance. Best attack is to thoroughly clean entire area and monitor.
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Old 02-19-2014, 04:00 PM   #3 (permalink)
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Quote:
Originally Posted by Mtn Scoob View Post
Hi All,
New member posting for the first time.... I did try and search for this in other threads, but I think this leak is in a different location to those I read about. The pic is fairly self explanatory. Front upper part of engine, you can see dipstick in picture. First noticed at 40k. Dealer cleaned up suggesting it may have been spilled during oil change and said keep an eye on it. Now at 56k and still seeping (not enough to drip down to floor). Does anyone want to suggest the cause of this? How bad does it need to be to qualify as a warranty issue? And what I should expect as a remedy? I just want to be a bit better informed before I go back to the dealer.
Thanks.
look under the filler cap to confirm the seal is still there. Mine went missing, then I discovered it was missing, then bought a new one, then found my old one in the engine bay. maybe something else - aren't there A/C lines around there? could be PAG oil.
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Old 02-19-2014, 05:08 PM   #4 (permalink)
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look under the filler cap to confirm the seal is still there. Mine went missing, then I discovered it was missing, then bought a new one, then found my old one in the engine bay. maybe something else - aren't there A/C lines around there? could be PAG oil.
Thanks. Filler cap seal in place. I will check AC lines - hadn't crossed my mind. Will clean up and monitor. All servicing was done at the dealer until the lease was up. Last oil change was at my local quick lube shop that is owned by a friend so I trust those guys. Did use OEM filter though. Hopefully this is minor, but once it spreads thin and gets covered in dust/dirt, always looks bad.
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Old 02-19-2014, 06:38 PM   #5 (permalink)
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Is it engine oil? In the photo, there's a rubber hose in the center that goes to a fitting just left of the yellow engine oil dipstick handle. That fitting appears to be wet. There's a brass-colored sensor on the fitting, with a red electrical connector. That could be the coolant temperature sensor, but I'm not familiar with the new 3.6, so it's just a guess. But given that the fitting appears to wet, I wonder if it's coolant. The rubber hose spring clamp might not be holding properly, or the sensor could be leaking.
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Old 02-19-2014, 09:09 PM   #6 (permalink)
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Per TSB look into PCV first.
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Old 02-19-2014, 10:07 PM   #7 (permalink)
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Is it engine oil? In the photo, there's a rubber hose in the center that goes to a fitting just left of the yellow engine oil dipstick handle. That fitting appears to be wet. There's a brass-colored sensor on the fitting, with a red electrical connector. That could be the coolant temperature sensor, but I'm not familiar with the new 3.6, so it's just a guess. But given that the fitting appears to wet, I wonder if it's coolant. The rubber hose spring clamp might not be holding properly, or the sensor could be leaking.
I thought maybe the same thing but didn't want to speculate before the OP had a chance to clean it up and see where and if it shows up again. If it is coolant stain a good nose can detect the sweet/tart odor on a warm engine.
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Old 02-19-2014, 11:44 PM   #8 (permalink)
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I was thinking, take the cover off the engine and see if the AC compressor has oil on it as well, especially around the line connections.

The hose is the upper radiator hose and the sensor is the engine temperature sensor. I also thought about coolant spraying from the hose or the sensor, but dried glycol is missing. It usually leaves the residue near the leak. So I don't think its coolant. Check the level anyway.

And yes, check the PCV valve.
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Old 02-23-2014, 02:16 PM   #9 (permalink)
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I was thinking, take the cover off the engine and see if the AC compressor has oil on it as well, especially around the line connections.

The hose is the upper radiator hose and the sensor is the engine temperature sensor. I also thought about coolant spraying from the hose or the sensor, but dried glycol is missing. It usually leaves the residue near the leak. So I don't think its coolant. Check the level anyway.

And yes, check the PCV valve.
Thanks All. Got it cleaned up and will make these checks as I monitor it. Appreciate the feedback.
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