Thread: Mobil 1 or Pennzoil?
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  #11  
Old 03-16-2013, 01:52 PM
merc37 merc37 is offline
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Join Date: Jan 2011
Location: WI
Posts: 11
My service manual says change every 7500 miles. I am going towards the shell Rotella brands (15W40) and I will still change every 3000. Any takes on this?
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