Lest I be accused of not using the Search feature, I only saw (and did indeed read) threads comparing VRP to boutiques but not in the way I had a question about....
It appears, for the time being, that VRP is pretty unique in the $30-ish Walmart oil selections at least in cleaning stubborn ring deposits and stopping/mitigating oil consumption on vehicles that do so.
@Glenda W. had a great thread recently that showed VRP cleaning/stopping the majority of oil consumption on a vehicle that had used some name brand and well regarded off the shelf oils all its life up until the switch to VRP. In my layperson reading here, the biggest causes of oil consumption on vehicles posted here is some sort of ring deposits. No doubt there are other reasons, but ring deposits seem to be a common theme. Assuming one uses VRP for the long haul at normie 5K intervals, could one hypothesize that the main reason an engine could degrade and consume large quantities of oil be mitigated?
Which brings me to the question rattling around in my head.....
If the above is true, what benefits outside of superior drain intervals would boutiques offer over VRP? I've read that boutiques and certain certifications for oil (Euros in particular) demand a certain add pack to keep pistons and such clean, wouldn't the anecdotal evidence we see plenty of here show that VRP excels at that? Maybe the boutiques - HPL in particular as that is the brand I've engaged with the most - use super high grade base oils of PAO/ANs/Esters that are certainly purer than VRP base oils, but how would those contribute to a cleaner/longer running engine when VRP *seems* to keep things as clean?
I am in awe of the super long drain intervals HPL and others can allow on many cars - reading the 25-30K OCIs on a members Corolla and another's Durango is daunting in a good way - so I get that doing the math may mean that they both equal out in cost over the long haul. But let's assume that both (a boutique and VRP) are the same cost or at least a few bucks within each other and you are NOT doing super long drain intervals....what long term benefits/superior protection (if any) would a boutique offer?
*I know we don't have long term data on VRP so this is more of an educated guessing thought. I'm also a fan of boutiques as they are owned by small American businesses which I go out of my way to support even if markedly more expensive.