Getting ready to perform my first oil change on the 300D turbo. However, I've noticed that the filter housing bolts are very tough to get loosened. Is this normal? If anybody has a good website regarding oil changes on 300's...please let me know. Are there any tricks or secrets regarding the filter? How about the rubber gasket. I think that there is also a copper type of washer that came with the filter... is this part of the oil change? I f anyone has tips for me, it would be much appreciated.