^ Tell me about it! I changed my oil a few weeks ago and while I had an easy time with the sump drain plug the oil cooler drain plug a was different story altogether! I was lying under the car pushing on that bolt with all my weight - I swore something was going to break. The car was jiggling like a bugger and I thought the whole thing was going to come down on top of me!
I had to hit the spanner with a mallet to undo it... It was so tightly wound it couldn't have been put on by hand... either that or it had never been undone before. I think whoever had been servicing it all these years had just been draining the sump but that's the half-arsed way of doing it because you're leaving about 700ml of old oil in the cooler to mix back in with the new stuff.