VR&P and low tension ring packs in street engines is the only reason I'm even here on this site. I've not run any Valvoline oils for over 40 years, never been a fan. Always been a Redline Oil & Mobil1 guy in the past, I was even sponsored by Redline Oil in my drag racing career for many years, then I bought a 2018 Audi Q7 with 84,000 miles on the clock that gobbled a quart of oil in the first 400 miles of ownership. Up until I got it, the dealer had been using the "Audi approved" Castrol Euro 5w-40 changes on it every 10,000 miles on time according to the dealer and CarFax. It was quite obvious to me after the purchase that it was traded in because of the oil gobbling problem, which was because of the known low tension ring pack in the 3.0t CREC engine in some of the Audis starting in 2016 and going thru till 2020. It's a known issue on them, but they can be fixed when it happens by using a Berrymans B12 piston soak, Yamalube Ring Free plus along with the VR&P oil. Euro oils do not keep the oil control rings and pistons clean enough on these CREC engines on 90% of them. The guys that tune them and run them hard enough have less problems with the carbon and ring sticking, but thats for another discussion.
Back to VR&P, I'm now running it in all of our vehicles even if low mileage like my 5.3 chevy with 40K miles on it, which is also a known ring sticker, and lifter prone problem engine, and my awesome older 2013 A6 with the 3.0t that is a better engine and does't have a low tension ring pack in it. It's never ever used a drop of oil while using M1 0w-40, yet I still switched it to VR&P seeing how well it works in the Q7's 3.0t. So the skeptics can believe whatever they want. I myself could care less what the skeptics run or believe. I've seen it work for many on the Audi & VW forums and witnessed firsthand what the Euro oils have done to cause the rings to stick in the first place, same with the Chevys. Use what ever oil you want to use. I doubt anyone cares, just makes it easier for us guys that want it to see VR&P on the shelf.
Bottom line is the other oils make for the stuck oil control ring mess, VR&P cleans it up. VR&P is very helpful for low ring tension engines to clean & free up oil control rings on these engines, and I also believe engines with problem areas in regard to deposits, sticking lifters, variable cam timing mechanisms that require full flow of oil orifices or that type of thing. There is a real need for this type of oil nowadays with some of these engines. Everyone gets hung up on Dexos or any certs for that matter. All I can say is F those certs, Dexos isn't going to happen with this oil even though it meets it fine, Valvoline isn't going to reveal the secret sauce thats needed for Dexos approvals. And the "certified oil" is causing the stuck rings in the first place on our Euro cars.