In short, Mazda does indeed recommend 5W-30 for the CX90 Turbo S in Mexico and 0W-20 in the US and Canada. The 0W-20 is NOT a 'requirement', it is recommended to improve fuel mileage on short duration trips. Having said that, the numbers put up by the Mobil 1 0W-30 ESP absolutely exceed in every manner, factory Mazda warranty specifications per Mazda. In fact, overall it's an insanely great oil available for $29 for a 5 quart jug at a local Walmart which means, I can easily get it without...
Read more
Read more