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  #11  
Old 06-24-2018, 05:02 PM
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Quote:
Originally Posted by andrewwynn View Post
Aka the LEFT side.

Whether it's a car, plane or boat: you determine left from right whilst seated at the helm, looking forward.
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  #12  
Old 06-24-2018, 05:47 PM
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LEFT , its the LEFT
I got a leak on the LEFT hand side , the passenger side of the car
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  #13  
Old 06-24-2018, 07:05 PM
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Literally laughing out loud. Passenger side is the RIGHT side where I'm from. I think I just got confused from driver's and passenger's being in the lead paragraph. Since world wide forum I avoid those descriptors. You also mentioned steering boot which I thought had something to do with the steering wheel linkage which is why I got derailed to the right side with the chain tensioner.

I have M54 engines in both my E53s and they will exhibit simikar oil leaks from the filter o-ring leaking or oil filter housing.

I have had the M62 apart down to the block and there are a couple gooey suspects in that zone. The chain covers are a prime suspect, power steering and transmission cooler if automatic. Confirmation that it is engine oil vs other lubricant?

When removing the transmission exchanger it's always been a complete gooey mess after 150,000 miles. From something above usually valve cover or chain covers.

Any minor leak in front will coat everything in the engine due to wind so a good scrub is the best start. Oh: also UV tracer is a winner.
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  #14  
Old 06-24-2018, 08:06 PM
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Degrease the entire thing then put UV dye in the oil. The leak should become quickly apparent.
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  #15  
Old 06-25-2018, 01:40 AM
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https://www.ebay.co.uk/itm/UV-Dye-To...MAAOSw44BYWmMp

something like this will be OK, never used a product like this before

yeah, I've tried to get in to clean it as much as I can in that corner , but space is very limited, lets try the uv stuff. might show some thing
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Last edited by Ryoken; 06-25-2018 at 01:58 AM.
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  #16  
Old 06-25-2018, 02:42 PM
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Originally Posted by Fifty150hs View Post
Degrease the entire thing then put UV dye in the oil. The leak should become quickly apparent.
This, I'm doing this today. Kit is ~$25 on Amazon prime.

Also, before you do it, get a can of engine degreaser, go to one of those unattended quater washes with the pressure wash nozzle you use yourself. Soak the engine, undercarriage etc, let it soak for a few minutes, then use the pressure washer clean it all down.

Then do the UV die test.

Also this is an easy trick for whenever you need to do a serious engine service, makes work much easier without built up crud on the engine bay and oil on your doorknobs that your wife is sure to be upset with you over.
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  #17  
Old 06-25-2018, 05:00 PM
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Originally Posted by johngrefe View Post
This, I'm doing this today. Kit is ~$25 on Amazon prime.

Also, before you do it, get a can of engine degreaser, go to one of those unattended quater washes with the pressure wash nozzle you use yourself. Soak the engine, undercarriage etc, let it soak for a few minutes, then use the pressure washer clean it all down.

Then do the UV die test.

Also this is an easy trick for whenever you need to do a serious engine service, makes work much easier without built up crud on the engine bay and oil on your doorknobs that your wife is sure to be upset with you over.
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  #18  
Old 06-26-2018, 08:49 PM
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So since my oil leak is about the same place.

I also removed the aluminium scrape pan, and cleaned through there with the pressure washer.

I had the car up at a 20d angle on ramps while running, and noticed the oil running down between the lower oil pan and transfer case. It was coming from above there, which ended up being the oil thermostat.

The thermostat is held in place with a few bolts and 'seals' with two orings.

The whole unit is ~$120.
The orings at the dealer were $4.17 each.
You probably only need to replace the orings, as the thermostat fails open, which will just result in a slow warm up cycle.
https://parts.bmwofstratham.com/p/O-...421702917.html
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  #19  
Old 06-30-2018, 11:23 AM
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still waiting on the csi fluid., will let you know
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  #20  
Old 07-01-2018, 01:20 PM
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ninja edit. Didnít realize it was 02
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