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#1
02-07-2019, 01:14 AM
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Oil Thermostat Gasket, what else could it be?
Well, I set out on the mission to replace what I thought was the oil thermostat gasket leaking, but after getting everything apart I'm not sure of that is the issue. There is oil on the alternator and the vicinity, but when I got a look at the oil thermostat, it looks to have been replaced at some point, the part is shiny clean, and one of the e-torx bolts was replaced with a standard hex bolt. Ive only had the truck for a few years, so I don't know when or where it might have been done.
So my question is, what else could be leaking in that area? Here is a pic of the Oil Thermostat, the seal circled in yellow looks oil free, but the lines circled in red are wet with oil. Could it be whoever changed it didn’t put new o-rings on the lines and they are the culprit? In the second pic you can clearly see that one of the e-torx was replaced with a hex bolt, so I know for sure someone’s been here before.  
Last edited by MW3Designs; 02-07-2019 at 03:01 AM. 
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#2
02-07-2019, 01:42 PM
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Which engine?
Is the oil filter housing nearby? That's a common leak after 30K miles or so.
__________________
e70 - purchased 6/2018 e36 - wouldn't pass smog at 190k 2016 e53 - transmission blew at 225k 2012 e30 - sold as it was a little slow for a DD and burning oil at 220k 2011
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#3
02-07-2019, 01:49 PM
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Quote:
It’s the 4.8i Sent from my iPhone using Tapatalk
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#4
02-07-2019, 02:01 PM
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It looks like they forgot/neglect to replace the o-rings on the hoses when they did the oil thermostat gasket.
I am also amazed that you were able to get a camera/phone in there and took those pictures showing such clear pictures of thermostat. That area is really tight in my car.
__________________
Black Sapphire MetallicNevada BrownDark Bamboo e70 X5 xDrive4.8 Alpine WhiteCoral RedAluminum f30 328i Sportline/6MT Imola RedBlackBlack Aluminum e46 330i ZHP/6MT
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#5
02-08-2019, 01:32 AM
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Quote:
It wasn’t too bad at all getting in there, especially with the alternator removed. If I had a set of clean hands with me I would have taken more pics to make a diy of the alternator removal/installation. A lot of people saying it was a bear to get to the Oil Thermostat, but it really wasn’t that bad. Sent from my iPhone using Tapatalk
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