MH>Yes, this is the rebuilt Jasper motor.  It only does it on a cold start for   
   MH>first 30 seconds or so and then goes away.   
      
   MH>I did call the shop to ask them, and he said the 3.4 V-6's do that often on   
   MH>cold starts and not to worry about it unless it does it constantly.  He said   
   MH>it starts doing it longer periods of time, to bring it in since it has a 3 y   
   MH>warranty.   
      
   MH>I need to do another oil change soon, so will see if that makes any differen   
   MH>I only hear it for about 20-30 seconds after a cold start (been sitting for   
   MH>longer than 8 hours).   
      
   You might want to try a 5-30 FULL Synthetic oil. It should fill up the   
   hydraulic lifters faster and reduce the cold startup noise.   
   I personnaly woudl not recomend using a 5-XX non synthetic oil unless   
   the weather is really cold   
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