Well, being that most of my cars have always been of the "make sure you can get to the plugs easily, you'll be changing them often type" fairly often. My s60 really has fallen on its face the last 5k miles or so. I've been told that they should last more than 20k but w/ a turbo, and running pee for fuel most of the time I think its time.
Just did them in my gf's parents C70 lpt w/ 20k miles and it was night and day.
Haven't had to much in the ways of bad sets though. You never know though, one that isn't gapped right could do that.
Now, if I could just spare some money from my 242ti project and actually by sparkplugs for the S60!!! LOL
Doug
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Sacramento VCOA President, (sacvolvo@hotmail.com) Admin @ clubvolvo.com 2001 S60 2.4t w/17' Amalthea & Premium package 82 242t 5spd (Offical Project Car!) w/ With more parts than I can list, 85 244ti~ Parts car
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