Yo vivÃa en Galicia por un aÃ±o y medio. I don't remember seeing auto parts stores, it was early 1970's. The locals drove ancient Seats, Ebro trucks and some French made Citroens and Simcas. One really rich guy had an AMC Javelin with a V8 engine. He might have had the fastest car in all of EspaÃ±a back then.
There's a good selection of name brand oils there. My Mercedes would be happy, though my wallet might not.
The no-name discount oils are just different brand names than I'm used to, but probably equivalent to US off brands made by Warren, Phillips, etc. Probably good for what they're designed for.
BITOG people are oil snobs, yet we'll use Walmart brand. Maybe not Black Knight no spec brand at the dollar store, but for people who can't afford more than $2 a quart, there is a market product.
I'm surprised by Elf because I think here in the US they only market Total now.