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.
I’ll be blunt - fuck this dealer.
Do your own oil changes with any synthetic. Supertech from Walmart, Kirkland from Costco, Pennzoil Ultra Platinum from an auto store, they’re all good enough for the CX-50. You’ll save a ton of money. Or, if you really don’t want to do your own oil changes, take it to any independent shop to do your oil changes and bring your own oil and filter in (use the OEM Mazda filters made in Japan or Thailand). Synthetic is a better oil by far, and when the oil is on sale, the price difference is negligible, especially if you go with brands like Supertech or Kirkland. The only reason they want you to keep using the Mazda blend is because they can make more money from you using the cheaper oil that they get in bulk, and recommend a shorter oil change interval to get you in there more often.
Use synthetic oil, do your own oil changes, and follow the basic maintenance outlined in the Scheduled Maintenance section of your Owner’s Manual. Keep a log of your maintenance and/or keep all of your receipts and invoices for any parts or services you buy.