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I have a 06 3500 LT and it has the display that tells the % left of the fuel filter. Should I trust that or just change it every 10,000 miles?
 

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even though my truck doesnt have that function i wouldnt ever trust it. change it every other oil change and you shouldnt have a problem!
 

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Never go off the DIC %. Do it every 10K or 15K.
 

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Can't imagine why you wouldn't use it. My 04 doesn't have one, but I use the oil life to tell me when to change the oil, UOA come back fine. I can't see throwing away a perfectly good filter.
 
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