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Hi folks,
pleas help. I found part of the engine covered by the oil. It should not be there - I guess.I have no clue how long it is like this. Car: MB GL class 350 Bluetec (2015). What could it be? For more details see pictures. Thanks in advance.
Oil can leak out from many places. It will always show up at the lowest place due to gravity. Plus, wind can re-direct it on the way down. Regardless of the type of engine, the first thing to do is inspect closer. A leak is a leak is a leak and all engines can leak so the process is basically the same. Follow the trail. If you can't find the source (other than windage, it would be the highest spot you find a leak trail) because there's oil all over, the next step is to super clean the engine and then monitor closely. There's really nothing else we can tell you - there's no way for us to say "Oh, that leak is from "this spot".
HOWEVER... it does almost look like a leak is emanating from one of those bolts? You should be able to tell better than I can. Clean that area up spic-n-span and then monitor.
It’s also a diesel, and these are known to leak oil from several spots. I would just have the engine cleaned off and monitor for any new leaks, and keep the oil topped off. You do not want to run this engine out of oil, it has a penchant for seizing.
Oil can leak out from many places. It will always show up at the lowest place due to gravity. Plus, wind can re-direct it on the way down. Regardless of the type of engine, the first thing to do is inspect closer. A leak is a leak is a leak and all engines can leak so the process is basically the same. Follow the trail. If you can't find the source (other than windage, it would be the highest spot you find a leak trail) because there's oil all over, the next step is to super clean the engine and then monitor closely. There's really nothing else we can tell you - there's no way for us to say "Oh, that leak is from "this spot".
HOWEVER... it does almost look like a leak is emanating from one of those bolts? You should be able to tell better than I can. Clean that area up spic-n-span and then monitor.
Thank you guys. I will clean it asap. Will monitor.
But I think it is to dark for engine oil. Isn't it? I mean, could it be e.g. oil from turbo, or so... I am not car tech guy, just guessing...
Oil can leak out from many places. It will always show up at the lowest place due to gravity. Plus, wind can re-direct it on the way down. Regardless of the type of engine, the first thing to do is inspect closer. A leak is a leak is a leak and all engines can leak so the process is basically the same. Follow the trail. If you can't find the source (other than windage, it would be the highest spot you find a leak trail) because there's oil all over, the next step is to super clean the engine and then monitor closely. There's really nothing else we can tell you - there's no way for us to say "Oh, that leak is from "this spot".
HOWEVER... it does almost look like a leak is emanating from one of those bolts? You should be able to tell better than I can. Clean that area up spic-n-span and then monitor.
I forgot to answer... It is hard to say anything about source (bolts or so). It is dirty. I have to clean it first. I was just wondering if this is a common problem that experienced users would easily identify. I dont like repair ;-)
It’s also a diesel, and these are known to leak oil from several spots. I would just have the engine cleaned off and monitor for any new leaks, and keep the oil topped off. You do not want to run this engine out of oil, it has a penchant for seizing.
The oil is dirty black (not necessarily bad) for two reasons... one, it's a diesel and two, it picks up contaminants as it travels along outside the engine. But, yes, it's engine oil.
Pull your dipstick... what color is the oil on it?
Max mentioned a "common" leak point for this particular diesel and that would be the oil cooler. However, leaks from there present on the backside of the engine - not the front.
It looks like its on air intake, post turbo. Because of the oil that gets recycled through crank case ventilation, you will pull a lot of oil though here. Given it is pressurized, any bad seals will mean oil will leak from this part. Clean it up and hopefully you can find where it is coming from, but it is more cosmetic, unless there is enough air leakage to impact performance.
If you try and fix this, you'll want to replace all the orings on the post turbo intake tubes. Given the leak, it's likely they are old.
It looks like its on air intake, post turbo. Because of the oil that gets recycled through crank case ventilation, you will pull a lot of oil though here. Given it is pressurized, any bad seals will mean oil will leak from this part. Clean it up and hopefully you can find where it is coming from, but it is more cosmetic, unless there is enough air leakage to impact performance.
If you try and fix this, you'll want to replace all the orings on the post turbo intake tubes. Given the leak, it's likely they are old.
thank you! I hope I will find the time to clean it during this weekend and will replay… Thanks a lot
05-02-2023, 04:55 AM
