I had an '03 Chrysler Town 'n Country w 250K with a 3.3 that a deer totaled out a year ago. I used Mobil 1 10W-30 and had no motor problems. I did have to change the oil pan gasket once though. Van ran quiet and smooth. The only time I had a problem was once I tried Royal Purple 10W-30 and got some lifter or bearing clatter on start up for about 5 seconds. It never did this before or since I dumped the Royal Purple.
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