I only wish I could more scientifically or definitively update and document what the product is doing inside my engine. I more than likely have or have had an oil leak, leading me to guess at levels when hot and oil may not have fully returned to the pan, the whole check oil cold vs hot debate. I have always learned that oil, like all fluids, should expand when hot but that you shouldn't check hot not for that reason (oil thins very little when hot, going back a ways, it is designed to keep its protection when hot) but that you'll get a false reading because the oil isn't back in the pan. I wipe the dipstick and check sometimes and it can be very hard to get a read but.
My oil leak was confounded by that I only recently cleaned my PCV valve. I then put about 1100 miles on my car after doing so, and the highway therapy must have really helped it out because, oh man, power is back. I used to be able to float my oil cap on the fill hole when it was running.
FURTHER compounding the issue is that I had a huge leak in a connecting pipe of air intake and I finally replaced that with a new part before my ~1250 mile trip.
I did also change the oil filter.
This means... that if I send my filter to 53' Stude, (a white Supertech filter. I added the product, drove the 1250 miles after doing so and meeting Dave and the HPL crew on I believe Friday, New Year's Eve, then changed it to said White Supertech before driving again 1250 or so miles and then DDing it.. cleaning PCV and installed new intake hose) that the filter I just mentioned twice SHOULD be catching some kind of a deep clean. We will see. Fram Ultra goes on after that.
Car feels very, very smooth, has its power back, no more P0420 as per Readiness Monitors via Torque Pro and ELM327 Bluetooth adapter on the way back, they all set and no more code, I am thinking my air/fuel mixture was super out of whack for many thousands of miles and my New Year's Resolution to finally fix that basic, easy part paid off in one trip.
So about the oil, and the EC, no doubt that helped too.. plugged up PCV may have made the oil leak so once we find that (probably Valve Cover) then it probably won't leak any more oil, my back window wont be a something is leaking fine oily mess and we should be good engine-wise until the end of time.
Added a quart in, will add more engine cleaner when it is day and I have time.