oil
#1
#2
I work at a Napa Auto Parts here in Texas. I can honestly say that people choose the napa brand more than Rotella, Dela, or Amsoil. Myself, I run amsoil in my truck. I haven't tried the 15-40w oil that we offer but most of my friends use it since it is cheaper than others because we arent really going through another company to get it.
#3
#6
HDD Series 3000 5W-30 Synthetic Heavy Duty Diesel Oil http://www.amsoil.com/storefront/hdd.aspx
AME 15W-40 AMSOIL Synthetic Diesel & Marine Motor Oil http://www.amsoil.com/storefront/ame.aspx
DEO Synthetic 5W-40 Premium Diesel Oil (CJ-4) http://www.amsoil.com/StoreFront/deo.aspx
PCO Synthetic Blend 15W-40 Heavy Duty Motor Oil http://www.amsoil.com/storefront/pco.aspx
I run DEO because my 6.7L Cummins requires a CJ-4 low sulphur oil. If I had a 5.9L Cummins I would probably use AME because it has a TBN of 12 and should give the longest life. If you want to save money, or you're the kind of guy who changes his oil every 3,000 miles, the PCO is not a bad choice.
#7
AMSOIL Product Look up Guide....
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AMSOIL PRODUCT APPLICATION GUIDE
See what oils are right for your truck....
AMSOIL PRODUCT APPLICATION GUIDE