Well I certainly appreciate the comments as this is what I was looking to hear. I’m slowly backing away from the HPL ledge now as everyone seems to agree that a 5K drain interval doesn’t justify the use of HPL. I guess that I may just drop back down to my old standby Schaffer which isnt a whole lot less expensive but has always been good to me. My Hemi 5.7 ran like a swiss clock on the 5w20.
Define/quantify not a whole lot less expensive.
From what I can see on quick search 9000 doesn't show any API or ILSAC certifications, their 7000 does from what I saw. Like HPL probably, not worth their money to pay for additional certs when they feel or know that the oil far surpasses that minimum standard. That then is the same lawyer $$ arguments of non certified oil use if motor develops extra ventilation in the block.
You were looking for something to keep GDI oil burning issues under control which I think many of us take to be oil control ring issues as a large cause. M1, PP, QS, Valvoline, Castrol, ST and countless others have also been very good to a lot of members and our motors ran great for many 100k's and some that barely burned oil. M1/PP had my 4.7L Sequoia at 7500k changes with no oil use at over 180k on trips, towing etc.
Chemistry and knowledge changes provide options. Some very well respected (IMO) members ran those quality oils and at some point tried HPL and were amazed how much stuff was in filters that they never had before and borescopes to show differences. Some of them reduce oil burning also keeping motor teardown/repair away. The VRP seems to be doing a lot of the same things at a lesser cost and commercially available.
Ignoring the environmental waste things, time and labor costs etc. just $$ on oil and filters. How many changes with filter of M1, PP, QS, Valvoline, Castrol, ST could you do vs Schaeffer or HPL? Is it 2-1? Would 2500 mile changes protect better if you could do 2? Would you notice the difference in your ownership life of the vehicle? Which will make you sleep better at night?
Schaeffer I think has a very good reputation for quality and also a large industrial clientele that have different needs than some of the standard testing and have proven their worth to many. Does it clean the same as HPL? Maybe. If you had run HPL or VRP in the Hemi after all the years/miles on Schaeffer what would show in the filters or borescope? WWilson might be able to share some details on that.
HPL, Schaeffer, M1, PP, QS, Valvoline, Castrol, ST at severe service intervals would all probably be just fine for life of vehicle. UOA with them might show that you have no issue going factory MM or even more. Some will probably hold up better than others over that time so possibly worth the extra $$ to go safely and comfortably to 10k instead of 5k.
You can go the full BITOG paralysis by analysis and always wonder if you are doing the best. You can pick any of the above that make you happy. If you start to notice oil burning you can always switch to a better cleaning oil, do piston soaks and other things to keep it under control or fix it. Hopefully it didn't come from cylinder wall scoring and then you'll have PTSD on why you didn't use one of the others to prevent it from the beginning.
If I had taken the road trips up north and spent money on Fluid Film, Woolwax or Krown the Sequoia might be wife's daily driver still and have 250k+ but that didn't happen.