Engine Sludge/Flushing - Mercedes-Benz Forum

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post #1 of 4 (permalink) Old 11-19-2013, 11:50 AM Thread Starter
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Vehicle: 2011 E200 SE CGI Convertible
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Engine Sludge/Flushing


I purchase an 11 plate E200 SE CGI Blue-efficiency Convertible (Auto) 4 months ago from a dealer as approved used. I was told it was fully serviced, although not shown records as they are held centrally on MB's computer (practice I don't agree with as it's just an attempt to tie you to a dealer).

Over the 4 months I had repeated issues with sluggish apparently out of sync gear changes and on a couple of occasions losses of power. With very limited knowledge I guessed this to be a transmission issue and reported it as such to the dealer - basically the car has been back to them 4 times under warranty, twice fully recovered on a breakdown truck and the EML has been on 3 times.

At this point I'm regretting going anywhere near MB (longer story, the car hasn't been looked after by the dealer and was actually damaged on 1 visit).

Finally on visit 4 (after keeping the car for 2 weeks) they diagnose a large build up of engine oil sludge which has been blocking things and obviously dramatically affecting performance.

It's now been suggested that the car wasn't fully serviced and probably hasn't had an oil change prior to the 'service B' MB claim they carried out in April (approx 28k, now at 30k).

Q1. Does the above stack up? Car clearly wasn't fully serviced as claimed but is it likely no oil change until 28k and then a change and new filter would result in this problem?

Q2. Does the dealers solution sound like the right approach to take?

They are suggesting a double engine flush followed by another flush after 1k. Can anyone offer advice on whether this is sufficient/likely to be harmful in itself/what else I should say I want done (cars still under warranty and this is MB's mess to sort).

Ultimately I'm concerned about letting them off the hook too lightly so they can do the flush, wash their hands of it and I have future problems because of what they've done or just ignoring a bigger issue that remains.
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post #2 of 4 (permalink) Old 11-24-2013, 03:52 PM
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"engine flush" is a pretty generic term, regardless I would try to get out of that car. Engine sludge ruins engines.
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post #3 of 4 (permalink) Old 11-24-2013, 09:35 PM
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You can buy engine flush stuff and do it your self its as easy as changing the oil. How many miles total on the engine?
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post #4 of 4 (permalink) Old 11-26-2013, 01:45 PM
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Return the car to the dealer and request a refund of your purchase price and any service fees charged to you. The dealer committed fraud in offering you the vehicle and made false statements about its condition. File a complaint with their district manager, and MB UK.


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