Submariner1
Senior Member
- Joined
- Sep 3, 2016
- Messages
- 4,728
- Reaction score
- 802
- Location
- Windsor Berkshire
- Your Mercedes
- CL500 2009 5.5
I had the Poly V Belt replaced at my main Dealer And the MOT completed (no advisories)
When I got home I noticed the dipstick was half out. i.e. the O ring was not engaged, and the thicker blue plastic moulding was not blocking the dipstick tube opening.
Would dirty air get sucked into the dipstick tube ?
Note : The drive home was 54 miles. I definitely checked all the levels before the MOT so it definitely only went 54 miles open to the elements.
Normally I might not have been so concerned, but unfortunately I crawled in very slow traffic, circa 1.5 hours at the M25 / A3 junction due to “massive” roadworks, on a very dry dusty day. Earth moving Bulldozers whizzing by on the adjacent half finished road.
My concern is dusty dirty air being drawn into the engine. And the engine oil does look a bit more dirty than usual - but difficult to judge.
My guess is as they pulled out the Poly V Belt, it got caught on the dipstick handle and pulled it out a bit. And they did not notice?
As the car had a full service 501 miles before, should I get them to change the oil and filter?
May sound over fussy, but I pay them to change the oil frequently (every 1,500 to 3,000 miles max.) to avoid engine issues.
And it costs them very little to replace it - and give me peace of mind.
To rule out a blown breather etc. I placed a double layer of cling film over the dipstick tube and revved the engine to 3,000 revs.
I was expecting it to flap up and down, i.e. as one piston moved up, creating a vacuum and when another came down blow air out. I was surprised The cling film did not flutter, actually I could not see it even move. Guess with 8 cylinders the air movement self compensates so quickly there is virtually
no movement, hopefully there is no air recirculation?
When I got home I noticed the dipstick was half out. i.e. the O ring was not engaged, and the thicker blue plastic moulding was not blocking the dipstick tube opening.
Would dirty air get sucked into the dipstick tube ?
Note : The drive home was 54 miles. I definitely checked all the levels before the MOT so it definitely only went 54 miles open to the elements.
Normally I might not have been so concerned, but unfortunately I crawled in very slow traffic, circa 1.5 hours at the M25 / A3 junction due to “massive” roadworks, on a very dry dusty day. Earth moving Bulldozers whizzing by on the adjacent half finished road.
My concern is dusty dirty air being drawn into the engine. And the engine oil does look a bit more dirty than usual - but difficult to judge.
My guess is as they pulled out the Poly V Belt, it got caught on the dipstick handle and pulled it out a bit. And they did not notice?
As the car had a full service 501 miles before, should I get them to change the oil and filter?
May sound over fussy, but I pay them to change the oil frequently (every 1,500 to 3,000 miles max.) to avoid engine issues.
And it costs them very little to replace it - and give me peace of mind.
To rule out a blown breather etc. I placed a double layer of cling film over the dipstick tube and revved the engine to 3,000 revs.
I was expecting it to flap up and down, i.e. as one piston moved up, creating a vacuum and when another came down blow air out. I was surprised The cling film did not flutter, actually I could not see it even move. Guess with 8 cylinders the air movement self compensates so quickly there is virtually
no movement, hopefully there is no air recirculation?
.
