Date registered: Mar 2015
Vehicle: 1989 W124 260E
Location: Kidderminster in Worcestershire
Mentioned: 2 Post(s)
Quoted: 160 Post(s)
To over fill the engine with to much oil is bad . And the oil will push though the engine seals .Report it to the service depot top notch tell him you think they have damaged your engine by overfilling it .The extra oil will get out of any gaps it can find.
My friend had to purchase a new engine after he over filled his . He did this by putting a full tin of oil in to the engine he had done it like this for years . But this time the new tins had 50% extra them , this time he never looked on the containers and just put the contents right in. This cost a new engine clutch and radiator . Not happy as the car was only 3 years old at the time. Get another garage to look at it for second opinion ,, i would. Sad to hear and good luck .