Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
I've been using the Kirkland diesel oil for some time on my land management equipment. Typical hydraulic equipment where the engine operates under a load most of the time. I don't have any long-term data but nothing has broken and I've never heard anything bad. If you watch any of the YouTube videos on heavy equipment, you will see brands like Travelers and other private labeling like NAPA, for example being used, all from Warren.
I think that pa, pb and pc stuff are just supersede codes. I looked and both part numbers I saw were 5w40 oil. But it had no detail beyond that on the sight I looked at.
What does the owner's manual call for (CK4/CJ4)? You can use any of the three you listed but if synthetic is more expensive, save the money and go with conventional. Since oil change intervals are by mileage or time, usage extension offered by synthetic oil isn't realized and the advantage synthetic has in standing up to high engine heat, well, diesels just don't spin that fast.
Based on Rotella web site they only have One 5w40 T6 synthetic diesel oil thus all 3 you listed above are the same oil just listed in different ways
Example I just saw Rotella T6 at Walmart for under $30 gallon, a price that I don't think will break the bank for most diesel owners... IMHO spending an extra $30-45. for a synthetic oil change compared to Dino oil is well worth it IMHO, I call it cheap insurance knowing that the oil only gets changed out once a year,. I also know that synthetic oil, based on UOA holds up lot better then old Dino oil at the end of 12 months of usage...
Wow, under $30, it's $23 over here for T6 and well inventoried now. Menards also has T6 for $23 less their 11% off, Menards in an upper mid-states big box store, like Home Depot or Lowes but bigger.
I no longer have the UOA reports for the Dino oil or the T6 synthetic, I sold the truck so trashed the paper work related to it. My self being that Rotella T6 is so cheap an has been for many years have never understood why people would not use synthetic oil, I mean a person spends extra $$$ to get a diesel engine, yet many seen to want to skimp on the cost of the oil that is the life blood of the engine...
