I am quite aware of what forum I am on, and have been on here for 21+ years. I've read a few articles...
Irregardless of the oil thickening as you state, it still does not exceed the 30 grade rating. Key up on the 'more robust' part. You can also go back and read my earlier post on built in obsolescence. The end result being, I asked for an equivalent to what is getting harder to get, and more expensive. Not an argument as to why. I don't understand what is so hard for that to be understood.
Any other C3 oil with the same approvals is equivalent. Mobil 1 ESP is probably the best option IMO, many have already mentioned it.
I won’t get into the planned obsolescence thing because that exists on every part of the car, of which motor oil doesn’t touch most.
Good luck in your search
