Remember that you are adding 1.5 gallons of new CJ-4 oil to your system every time you are changing your bypass filter.
They aren't saying this to benefit you or your truck, they are saying this to keep you buying their CJ-4 oils.
I maintain that the arguement about CJ-4 oils are not "personal, non-factual opinons" but have been shown to be true. CJ-4 oils are a compromise to meet emissions. And as I stated in an earlier post, the current oil chemisty and engineering technology is making this true.
Since you are adding 1.5 gallons of fresh oil with each bypass filter change, that makes the UOA results rather skewed in favor of CJ-4 oils.
And as I've repeatedly told you, those UOAs of mine were not of oil that had "make up" oil added...they were STRAIGHT RUNS of CJ-4. :THREAT:
And the UOA recently run by a TDR memeber had 26k miles on it...other than it thickened because he doesn't run a bypass, it looked really good.
My point is, don't drag the CJ-4 oils through the mud because NONE OF US know what they are capable of...IMHO, the oil manufacturers are using additives that our conventional UOAs will not "see" and this was confirmed in a discussion on TDR. I base my opinions off UOAs of the oil in actual use, not the opinions of someone looking at a VOA or basing their opinions on hearsay.
Show me a trend of CJ-4 UOAs that show, in our application, where CJ-4 isn't performing as well as CI-4+...you most likely can't, because there are very few CJ-4 UOAs to compare...my UOAs being 2 of probably less than 20 I have seen in my net searches. And not a single CJ-4 UOA has looked bad, let alone worse than CI-4.
And again, basing an opinion on current oil chemistry analysis is most likely not accurate since they are using modern additives that we can't see in that UOA, other than in low wear metals.
And again, my UOAs are both straight runs of CJ-4...no make up oil added...the next one will have 1.5 gallons added to the 4.5 gallons sump, but it will also have nearly 20k on the "old oil" and 10k on the "make up oil".
My main point is two fold...first CJ-4 isn't anywhere as bad as some people want to have you believe and second, since CI-4 is being phased out, its sorta a moot point if you can't get CI-4 because production stopped...