As stated in a previous post, I recently got a job at a local Napa, which after 2 months of employment, I'll be about get a discount on filters. I've always believed and have always ran OEM or Donaldson oil filters on any diesel vehicle or marine engine. I did use a Fram on my 7.3 the last oil change but thats rare. Cummins gets Fleetguard or Donaldson Blue, Duramax gets AcDelco, Ford gets Motorcraft etc. Is there any reason for me not to run a Napa Gold oil filter on any of these engines, do they really meet oem specs like they claim? I have heard that the Napa Gold 7620XE for the Cummins is a rebadged Fleetguard, can anyone confirm this? I've also wanted to run a Fram Ultra on my Cummins but have been hesitant, how is that filter in regards to oem specs? I figured Donaldson regular and Blue oil and air filters must be great as they design alot of military heavy duty filtration products.
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