My brothers 90 Ranger does the same with a 2.9L and my 91 Ranger and my moms 94 Explorer both have a 4.0L init and I thappened to me so I ran a little thicker oil for one change with quart of Rislone and it helped but change it at like 1,500 miles after the Rislone because it gets dirtier faster hope it helps
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Sunday, November 19th, 2006 AT 11:23 AM