My point is, at 15+ years and 200K miles, the service interval becomes irrelevant. Furthermore, a good many people follow a 3000-mile interval, which means that you're virtually never finding that your service time agrees with the recommendation of the light.

It never fails that the thing comes on 100 miles after a proper oil change is done. I think Volvo installed it as a gimmick to get people back in the door, and try to sell a $300+ service package.
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::: Rob Bareiss, New London CT ::: 92 244 ::: 90 745GL ::: 90 745T ::: 84 242DL ::: 90 745T Parts ::: Used to have : 86 244DL, 87 244DL, 91 244, 88 244GL, 88 744GLE, 82 245T, 86 244DL, 87 244DL, 88 245DL, 89 244DL!