Just changed the oil in my Monte Carlo two days ago and glad I did.    
   Apparently, the Bosch oil filter that I had installed last time wasn't sealed   
   properly.  The rubber gasket wasn't flush and some oil had been seeping out.   
   It lost a quart over almost 4 months.   
      
   I cleaned everything up, replaced the oil and filter and everything seems to   
   be good now.   
      
   - Mark   
        
   --- WWIVToss v.1.50    
    * Origin:  http://www.weather-station.org * Bel Air, MD -USA (1:261/1304.0)