Thread: Oil choice for the 6.4
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  #10 (permalink)  
Old 07-02-2009, 08:01 AM
badazzstroker badazzstroker is offline
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Join Date: Jan 2008
Location: cedaredge colorado
Posts: 659
if you live in cold regions you should use syn if not you do not need it.I have ran regular rotella in diesels for many many years with great results.
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