2014 Mazda 2: Thicker oil for hot weather?
Hi. 2014 Mazda 2, 1.5L engine, 5-speed, about 100K miles. Owner's manual specifies 0W-20 full synthetic oil, which is what I've always used. (Not being a car guy, my strong inclination is to follow the owner's manual).
But I live in a hot climate (southern U.S.) and mostly drive on the highway. Occasionally very long trips.
So should I be thinking about using a 0W-30 or 10W-30 full synthetic instead during summer? Or should I just stick with following the manufacturer's instructions?
Thanks.