RW> In a 145k car, that would take it into the next stage of the engines   
   RW> life.   
   RW> By then, in that overhead cammed engine, it will have already gone   
   RW> through   
   RW> at least three timing belts/chains.   
      
      
   RW> Only if you used cheap plugs to replace the factory plugs.   
      
   GM (at least in my car) uses Platinum plugs from the factory.  I remember them   
   saying I wouldn't need a tune-up for 100k miles when I bought the car.   
      
   Little did I know, at 66k I had a major antifreeze leak on the lower intake   
   gasket.  70% of the problems I have had with my car since purchase have been   
   either antifreeze/gasket related or wheel bearing related.   
      
   - Mark   
      
   --- WWIVToss v.1.50    
    * Origin:  http://www.weather-station.org * Bel Air, MD -USA (1:261/1304.0)