Looking at the maintenance schedule for Mazdas with the Skyactiv engine the manufacturer recommends ONLY 0W-20(non-turbo) and 5W-30(turbo) fully synthetic oil changed out either every 5000 miles(severe) or 7500 miles(normal). Apparently in Mexico they can use 5W-20 fully synthetic oil.
I almost don't blame the automaker, people are generally idiots and don't follow scheduled maintenance.
I almost don't blame the automaker, people are generally idiots and don't follow scheduled maintenance.