Swapping Oils: Mobil 1 High Mileage to European Formula?

Apr 10, 2022
The car has 226k miles on it and does consume some oil, but nothing unbearable.

I currently use Mobil1 High Mileage (5w30 or 10w40 depends, but I prefer the latter). But the ideal viscosity would be 5w40 which is not available in this grade. However, Mobil1 offers that viscosity in the European Formula. Car isn't European, but I've heard around here that this formula is actually superior to HM? Does anyone have further insight to this? Anyone do a BlackStone lab test?
The 10W40 High Mileage is more than adequate.

Unless the HM is more expensive/harder to get, stick with it. You won't see any difference between the 2 except in color of the label or pennies in your piggybank. HM oil keeps things clean, conditions seals, and reduces consumption through burn-off. Euro oil does same albeit with slightly minor different chemistry to allow longer OCIs for most Euro makers recommendations/requirements. Potato or Potatoe. Extra "e" for Euro :p.
@shortyb the two oils are identical in price. And if I'm doing the same OCI then I believe the 5w viscosity would overall be best year round for my climate.
Things like my ATV, snowblower, and Porsche, actually specifically ask for 0w40.
I find it hard to believe that if it weren't a great oil, they would be asked for, especially by Porsche.
Mobil 1 0w40 was the factory oil, and what it got yesterday during its first oil change.
I'll soon be doing my ATV and boats oil change, they will be getting Mobil 1 0w40 to.
I'm thinking of going to Mobil 1 0W-40 "European Formula" in my Toyota. (Up from 0W-30). I've heard the "European Formula" is also somewhat superior. Albeit I have no idea why.
Because Euro architecture and German engineering are generally better than their American counterparts. But you can flush their politics along with your next 💩, they stink. 🤣