Because you never really know how the oil is made, what is advertising and what is real, or when they change the formula, your best choice is to look for the Euro OEM specs. Especially ones where the car company or a third party is required to test the oil, and they publish the oils that pass on an independent web site. Mercedes Benz (MB) is good for this.
Depending on if it’s high-SAPS/low-SAPS I look for MB 229.5/.51/.52, BMW LL01/04, Porsche A40/C30, VW…., etc.
If it has 2 or 3 good specs that I can trust, then I just buy on price.
Yes I have used Valvoline SynPower 0W40 before. It carried MB229 and was at a good price. It ran like any other name brand oil.
Depending on if it’s high-SAPS/low-SAPS I look for MB 229.5/.51/.52, BMW LL01/04, Porsche A40/C30, VW…., etc.
If it has 2 or 3 good specs that I can trust, then I just buy on price.
Yes I have used Valvoline SynPower 0W40 before. It carried MB229 and was at a good price. It ran like any other name brand oil.