Money can buy
almost anything...but at which costs?

Reputation is the highest good/asset a company can possibly have (of course next to its employees).
So companies set up market barriers of all kind to "protect" their high good "Reputation".
The more equal the brand reputations are, the lesser the "costs" to paticipate from the bigger brand.
uhm...i am rambling...
My dealership used Shell last time, I will have a serious talk with them...put my foot in the ground and ask for Liqui Moly

But honestly I have no clue about oils, so if the specs "seem" the same, the only thing i can rely on is "brand reputation"...and Liqui Moly at least wins a lot of prices for their oils, so that will turn into "Reputation" later.
uhm...i am rambling again...
I will speak with my dealership.