Maybe I'm the luckiest Spyder owner on the planet .... I've owned three Spyders over 14 years and completed dozens of oil filter changes ..... I've Never re-placed an "O" ring nor washer .... No leaks that couldn't be fixed with an extra tap on the socket handle. In the beginning, I remember reading on the forum lots of folks were changing their Wheel Bearings at every or every-other tire change. I've never done a wheel bearing either ..... JMHO .... Mike