The last time [last time ever] I washed down the engine, number four [the one at the back of the engine] spark plug was covered in oil, below the coil pack but outside the engine. I figured then that it's the valve cover gasket. Is this a common dillema? I gues I'll have to replace the gasket soon as it makes for fun times when trying to get the socket over the end of the plug with all that oil filling the valley on that cylinder. It took me quite some time just to extract that plug becuse of all the oil so next time I do it I'll replace the plugs too. They all looked fine but I'd really like to try the Bosch +4 <img src="/forums/images/graemlins/kewl.gif" alt="" /> <img src="/forums/images/graemlins/cheers.gif" alt="" />ones everyone seems to have. Are they really that much better?