What makes R&P a game changer is its ability to clean piston deposits that cause oil consumption in so many vehicles. These deposits aren’t visible without disassembly. It just so happens to also clean sludge and even reports of varnish by some. If used exclusively it may prevent any of these problems from ever happening. Only time will tell.
And the 10K interval. That is worse than the oil.
I wonder if there's a design/engineering flaw in the Audi rings.
Perhaps. I just am reluctant to blame a brand that does carry a required approval. But maybe in this instance it’s warranted.
That sounds to me like an engine design problem rather than a Castrol Euro oil problem.
Castrol Euro 5W-40 has many tough approvals similar to M1 Euro 0/5W-40 (iirc exact same approvals since I have both in my garage).
Are you sure that's what the dealer was using? Sometimes they use some kind of bulk oil ...
Maybe as mentioned, the 10K OCI was the problem with this car i.e. it's not easy on oil and/or driven hard. or if a Euro oil with this many approvals does that, I wonder what an oil with basic approvals will do.
btw, I am not necessarily a Castrol fan but you can't argue with the list of approvals unless they are meaningless! That's why I say the best oil is a shorter OCI.
I agree, my Hyundai never saw over a 3,500 mile oil change. All top grade oils, Amsoil SS Mobil1 Extended, Mobil 1 ESP and still majorly jammed rings. In the middle of a first Redline Performance 5W-30 Euro run my fuel dilution problem went away. My hypothesis is the two top rings were jammed closed. I no longer use Redline because they are price gouging their car oils. Hyundai/Kia have to be the worst for ring jamming carbon issues in the market today, with Audi being high on the list also.
Curious if Hyundai / Kia GDI engines are more the issue of early stuck rings than previous MPI engines (Nu) do ?
I would say maybe /to no. A relative called me and said their 2014 Kia Soul 2.0 MPI is at the dealer with a fried engine. It pulled a Hyundai/Kia recall rod knock code. The dealer said their was just less then a qt of oil in the pan and the motor is toast. He said it is 100 miles away from the 5,000 mile oil change regiment he goes by. So the motor sucked down 80%ish of it's oil during this oil change interval. He said the dealer would take it off his hands and give him $300 for it. He asked what I would do. I said, very very odd a dealer is offering you money for a car. I said red flag, go pick it up and your going to try an experiment. First off bring 4 qts of the cheapest oil you can find Walmart as you will be dumping it when you get home with the car. Also get 2 Fram Ultra oil filters and a jug of 5W-30 Valvoline Restore & Protect. The car ran flawlessly omn the way home. No fried motor. Hmmmmm........a $300 offer for the car, I guess they know the Hyundai/Kia early warning rod knock algorytm works and makes for an easy car purchuse and resale for the dealership. The car is still running and it is down to about half the oil loss in it's 3rd oil change He is doing 3,000 mile dumps till it is reduced a bit farther.
So you developed ring issues on Amsoil SS, M1 EP, and M1 ESP on 3000 mile intervals that the Redline corrected?
Yes, say it is not so, but it is so. I even PMed MolaKule at the time, to question how just using an oil at the time mid run vanished my very very bad at the time fuel dilution. I was ready to suck out 3/4 of qt of fuel/oil and the mid point of the 3,000 mile run and it was just a hair above level. First time I ever saw that in years since new. I don't run Redline anymore since they priced me out of the market after covid. $17 a qt is a rip off. I can get HPL in a bucket for $14. Now I just use VRP in the winter and use HPL EC every other change for my summer oil 5W-40 Motul 8100-Clean Gen 2. I try to run Mid SAPS if I can.
It is approved still. For a while, 2017ish(?), VWAG made Castrol REQUIRED for warranty, even put a special dye in the oil that would be checked for, (with UV light?) before approving a warranty claim, but I guess the executive kickbacks on that ran out, and as far as I know no VWAG product requires Castrol any longer to keep the engine warranty.
4 OCI and back to Supertech!Seems to be the marketing fail of VRP. Nobody seems to want to use VRP after the four oil changes.
