Oil Collecting Around Fill Gap - GL350
Thread Starter
Junior Member
Joined: Jan 2019
Posts: 43
Likes: 2
GL350
Oil Collecting Around Fill Gap - GL350
So, noticed a smallish oil spot on driveway under passenger side front of engine. Appears to be leaking down from oil fill cap then on back side of alternator. Did some research and have followed advise on a few threads here.
Loosened the oil fill cap to check for blow-by or "dancing" cap. No noticeable blow-by and cap seemed pretty still (only movement detected seemed to be in line with slight vibration from running engine).
Pulled Air Intake Ductwork to inspect for oil collecting through PCV system at Turbo. Very little oil present at seal and zero film on turbo impeller fins.
Buttoned it all back up and ran for 10 minutes at idle to check for any additional oil collecting at fill cap. None present but will check later after a 2 hour drive.
Recently had the timing chain replaced, not sure if anything could have taken place during the repair that could lead to this new oil collection, but cant say I noticed it as an issue before hand.
What else might I look for as a cause for oil leaking from the fill cap? Could it simply just need a new cap???
Also, I am planning to install an oil catch can to the PCV system which should help with any access oil collecting, but I'd like to discover the root cause of the current oil leak.
Thx for your thought!
Loosened the oil fill cap to check for blow-by or "dancing" cap. No noticeable blow-by and cap seemed pretty still (only movement detected seemed to be in line with slight vibration from running engine).
Pulled Air Intake Ductwork to inspect for oil collecting through PCV system at Turbo. Very little oil present at seal and zero film on turbo impeller fins.
Buttoned it all back up and ran for 10 minutes at idle to check for any additional oil collecting at fill cap. None present but will check later after a 2 hour drive.
Recently had the timing chain replaced, not sure if anything could have taken place during the repair that could lead to this new oil collection, but cant say I noticed it as an issue before hand.
What else might I look for as a cause for oil leaking from the fill cap? Could it simply just need a new cap???
Also, I am planning to install an oil catch can to the PCV system which should help with any access oil collecting, but I'd like to discover the root cause of the current oil leak.
Thx for your thought!
Senior Member
Joined: Jan 2013
Posts: 421
Likes: 57
2021 V167
Cap..
I have been experiencing the same on my GL350 although not quite dripping it has a good bit of oil vapor around cap. You can get a new gasket for the oil fill cap for around 3 bucks. Just replaced mine and the cap even tightens better.
