About 35K miles ago I switched oil to Mobil 1. Has been great, no problems. But something I just read indicated that maybe I should have had the engine flushed first. Is that true? And if I didn't, should I bother now? -- John A. Kilpatrick john@hypergeek.net Email| http://www.hypergeek.net/ john-page@hypergeek.net Text pages| ICQ: 19147504 remember: no obstacles/only challenges