My '92 Camry has about 195,000 kms(121,700 miles) or so since I got updated on the mileage. I'm not residing in Toronto at the moment. Before I left Toronto, I was doing my oil changes and noticed clumps were running out with the oil while draining. The clumps usually came out at the start of the draining process. Is this sludge that everyone is talking about? Am I in need of Auto-Rx? Note: oil used was Q-State 10W30 since new and changed to QS HM in '02. Changed every 3-4 months which ranged from 3744 miles to 4368 miles. Thanks for your time. Suggestions welcomed.