Thread: Rotella ?????
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Old 05-30-2007, 07:05 AM
CLIPPERS CLIPPERS is offline
Compression Ignition Addict
  

Join Date: May 2007
Location: NE Missouri
Posts: 329
I run 15-40 Motorcraft Superduty oil and change it anywhere from 3k to 5k miles. Should I have it tested, and if so, with how many miles on an oil change?
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