Not saying M1 EP or others are bad and don't maintain clean. Not saying VRP (or HPL) are the best things since indoor plumbing. I am intrigued by many users of VRP and HPL that always used good quality full syn like the M1 EP and then tried another like the VRP or even an EC30 run or 2 and then saw the carbon stuff in filters.This is little bit late me replying here considering I was interested in trying out Valvoline since my truck is 21 years old with 205K miles on it. Well I had some maintenance work done on it this past month and we did it in 3 stages because was too many things was due for maintenance like spark plugs replacement and cleaning, intake manifold cleaning, front and rear differential seals, injectors cleaning and replacement, leaking engine seals left and right, new clutch, new oil pump, new fuel pump, new throttle body, draining and refilling the transmission and power steering and only one thing left is draining and refilling the radiator and that didn't got done because they couldn't find the recommended antifreeze I opt for. I will order it online and have it done on a day I'm off from work.
Interestingly enough since they had to replace the oil pan seal the mechanic got the chance to see the engine from below and he was shocked of how clean it was that it took picture from it and showed me. There wasn't even mild varnish anywhere, everything was silver color.
Bear in mind even though I used the Mobil 1 EP, my last 7-8 oil changes back to back were shady around 8K-12K miles / 8-12 months intervals and only using the 5W20 version and while yes I get on the interstate from time to time I get stuck in traffic a lot and I'm constantly lugging loads.
From what I saw on the picture there is zero need for me to be using the Valvoline, actually I was shocked how spotless clean the engine was kept for the last 7-8 years considering the shady oil changes. What an impressive oil the Mobil 1 EP is, I'm glad I have been using it for the past 20 years. I did only one thing different with the oil change this time around, I bumped up on the viscosity to 5W-30 and probably that's not needed but after 21 years of service its time for richer viscosity and I will make sure no more shady oil changes and stick to the 3K miles oil changes as I was doing the first 12-13 years. I'm sticking with the Mobil 1 no doubt!
I've cut my filters for years but never really examined to closely the filter media. Using the EC30 for me was eye opening with how much junk/carbon was in my filter can and particles on media. Others have experienced the same. The VRP seems to be the inexpensive way to address some of that with IMO the HPL being even more capable. I'm sure some Amsoil's also as some say.
Grab a couple EC30's and put a quart in at next couple OCI in place of 1 qt M1 EP. If you are clean and impressed as you say so no sludge concerns, run for full OCI. Maybe swap filter 1/2 way through and cut it open to check. That was what I did and then ran full OCI for a couple more with no worries.