I dumped the factory oil at just over 1500 km (just over 900 miles) and put in 5W50 Castrol Syntec. At just over 1700 km's (same night as the oil change) I was making some full throttle passes at the not-so-local drag strip. Everything is fine with the engine, runs very smooth. The factory break-in oil seems more like water. VERY, VERY thin stuff. I can't imagine keeping that mixture in there for the recommended 5000km first oil change.
The owners manual has some tips on engine break in. They recommend some full throttle blasts as low as 300 miles, but in the highter gears only (3+).
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Marc
2003 PT Cruiser GT Turbo, Silver
1985 Dodge Omni GLH Turbo 16V, Black
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