[sosebee661]

Long story, kinda short... I have a 2018 45 that I bought from a large dealership with stores in many states, although, not a Mercedes dealership. It had 26k and a single owner with all maintenance documented and up to date. the dealership sold me an oil change package for a good price and i figured their techs were capableof at least an oil change, even though its an AMG and not a brand they normally work on. Well I'm an idiot and the tech was a moron. Took it for it's first oil change after driving it 5,000 miles because it's mostly used for short trips. When I pulled out of my garage later that evening I had a few drops of oil on the ground. Didn't think too much of it because the car acted normal. However the next morning I drove it and the idle was rough, I let it get to operating temp and drove it around a bit. When I got home I went to check the oil level and saw the dip stick was raised about 5 inches and around the filler neck there was oil. Took off the engine cover and the entire rocker cover is coated in oil. All over the wiring harness etc... I removed close to 2 full quarts with my extractor to get it a few lines under the full level on the dip stick. No cel and it doesn't seem like it's running weird any longer but I'm worried there might be damage done to wires, seals, etc... I'm gonna take it to the Mercedes dealership and have them Inspect it and see the extent of the damage. The service manager at the place that did the oil change said they would make it right and had been cooperative so far. My question is what do you think the extent of the damage could be? I'm gonna have a compression test done and an engine detail to say the least. What else should I be looking out for?

 

[ans]

Just listen for high pitch sqeal coming from the area of crank bearing (serpentine belt at bottom)as overfilling oil pushes the oil seal out,also some breather pipes and filters may need replacing ,fingers crossed no damage done, all cables should be watertight

 

[BigJase88]

This is basic stuff. Stuff a chimpanzee can get right surely 🫣

 

[sosebee661]

I actually did hear a high pitch whine when I drove it this morning. It definitely had a decrease in acceleration too, I feel like, and the bang from the exhaust when shifting was not as pronounced. I've only had the car since October of last year and it's been a really fun car to drive. I just ordered all the fluids and filters to do the 30k service on the transmission and rear differential as well. Wish I would have just done the oil change myself...

 

[sosebee661]

This is basic stuff. Stuff a chimpanzee can get right surely 🫣

Well I'm the zoo keeper that trusted the chimp, lesson learned.

 

[Knightrodrob]

5 in above the full mark, really. Well either its over filled or there ia another problem. Just drain it down to correct level and wash engine off. That's what they are gonna do.

 

[jmc]

yeah as noted definitely check the front main crank seal area
a search will show oil overfills are bad news
that tech should be relieved of duty

 

[Knightrodrob]

yeah as noted definitely check the front main crank seal area
a search will show oil overfills are bad news
that tech should be relieved of duty

Yep still awaiting out come

 

[jmc]

hope you documented the problem with lots of pix ... they are liable for the repairs due to their negligence since it was a deterministic effort to acquire and deposit the lubricant and a conscious effort not to engage in proper maintenance and measurement practices (good lord its just a 1L or 2L measuring beaker for crying out loud)

 

[mav238]

Yep still awaiting out come

Make sure they document the issue in their service write-up, and it states clearly that an overfill of the oil was performed by their technician.