My Yami dealer changes the oil. They see me a lot!
The service manager is pretty savvy and has talked me out of paying extra for oil. Since the dealer has to supply the regular oil under contract, my S10 sees regular old Yamalube.
Someday the contract will be up.
But I recon I will buy my oil & filters from my dealer for continued goodwill. (Washington took a big bite out of their business with NASA downsizing)
They really make me feel like they appreciate the business.
But when I'm paying for it, I'm likely to step up to semi or full synthetic. Yamalube just to make them happy.