Mercedes 240d oil plug not coming undone.




Purchase and keep at least one spare plug on hand and also purchase a 25-count bag of copper washers (plug washers are replaced at every oil change).
Craftsman bolt/nut removal tool, a one-pound hammer and a large box end wrench were what I used to remove a stuck oil drain plug when I purchased my Mercedes used. Must have been a gorilla who installed the plug previously who did not know how to use a torque wrench and had no mechanical empathy.
See photo of end result. I tapped the bolt removal tool onto the head of the stuck drain plug, applied significant torque to the wrench while tapping *firmly* the bolt removal tool with the one-pound hammer. Not for the faint of heart. The hammer keeps the tool on the head of the plug and the impact shock helps to break the threads loose.
In the photo the groove in the bolt head was where I began to cut off the head in preparation to drilling out the oil pan plug but I decided to use the bolt removal tool first.
Alternatively, go with a suction-type oil change device that works from top-side (assuming you have a dipstick on your car).


