Re: How far did you go on the original spark plugs?
Some report that by the time you get to 200K, the plugs have sort of bonded to the heads, and taking them out can, on a bad day, mean pulling the head to machine new threads in the aluminum head. I guess I would replace them, for that reason alone. People are almost religious about changing oil, but are lax and willing to take a chance on plugs. Not sure why.