Joe, There are certain oils that are just meant to be run for the break in period. They are formulated in a way that is not suited for long hard miles. They work best at protecting the cam during the break in period while allowing the rings to seat quickly. There are other high zinc formula synthetic oils that are then used for normal driving and like a most synthetics can go 5-10,000 miles without an oil change. Your driving habits, the tuning of the car (car running rich or lean), weather condition and air quality is the right way to judge when to change your oil. If you live/drive in a high dust or construction area, change more often. If you car tends to run rich or you drive it hard, change more often. Nick Alfano Performance 4849-76 st. Kenosha, WI. 53142 262-308-1302 262-942-8271 after 6pm central and weekends Message: 1 Date: Fri, 14 Mar 2008 11:20:38 -0700 (PDT) From: Joe Smith <know_ware@xxxxxxxxx> Subject: [Amc-list] motor oil confusion To: amc-list@xxxxxxxxxxxx Message-ID: <886567.48996.qm@xxxxxxxxxxxxxxxxxxxxxxxxxxx> Content-Type: text/plain; charset="us-ascii" I am confused about the motor oil information. When I read about the high ZDDP oils, they are either for diesel engines or they say to change at 500 miles, but the other forums I have read say leave it in for 3000 to 10000 miles!! I have a OHV 196, so, what is best? I just changed oil also. Is there an additive that I can put in so that I don't waste this fresh oil? Thanks! Joe _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list