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         TonyH Newbie 
          
 
  Joined: Nov 27 2012
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           | Posted: Apr 09 2019 at 1:38pm | IP Logged
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2012 Frontier.
 32k miles on it
 
 Besides visual inspection of belts, would you go by the age or by the miles to decide to replace a serpentine belt?
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         frontierguy Senior Member 
           
 Master Mechanic
  Joined: May 20 2008
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  Location: U.S. - Pennsylvania
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           | Posted: Apr 16 2019 at 4:40pm | IP Logged
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Many variables, no cracks, no noise, charging system OK, 
 don't worry about it. Usually 60K is a good time to 
 think about belts.
  __________________ 
 '10 Altima SL
 Traded 08 Frontier for 16 Frontier SV CC Long box, quite an upgrade. I do miss the 6 speed and Dynomax ex.
 
 
 Nissan Technician 25 + years
 2011 John Deere X720SE
 
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         Daktout1971 Newbie 
          
 
  Joined: May 02 2019
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  Location: U.S. - Texas
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           | Posted: May 04 2019 at 6:01am | IP Logged
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Gates makes a small plastic gauge that is used to measure the depth.  
 A good rule of thumb is to follow the manufacture specs.
 I ran the belt on my Dodge Caliber for over 150,000 and it was still in 
 good shape.
 If you want to push it, keep a spare in the vehicle.
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