First time I’ve seen a dealer turn down money.
Is it okay to switch my CX-50 to full synthetic 5w30?
5w30 is what’s in it now, it is just Mazda oil (whoever makes it). I think it may be a blend, but no one has comfirmed.
MazdaUSA on Twitter hasn’t replied to me in a year, so I will try here.
Castrol and Mobile 1 consistently rank the worst on tests.
Castrol does not, stop spreading misinformation. Blackstone has tons of data across different platforms showing Castrol does as good as premium oils such as motul and amsoil.