survey
Senior Member
- Joined
- Feb 10, 2009
- Messages
- 769
- Reaction score
- 23
- Location
- Suffolk
- Your Mercedes
- 2012 C207 E250cdi Sport Coupe
I believe that many garages now remove old engine oil by sucking out the oil rather than draining via the sump plug. Is this to be recommended as surely when oil is removed via the sump plug there is a better chance of old oil residue in the sump being removed than via sucking/pumping out? Should one insist that the garage drains via the sump?