I use Mazda's weight recommendation for my environment, as illustrated in your owners manual. I use 10W-30 and 15W-40 Full-Synthetic oils with zinc additives to stave off carbon deposits.
From the 21 Camry owners manual: “SAE 0W-16 is the best choice for good fuel economy and good starting in cold weather. If SAE 0W-16 is not available, 0W-20 oil may be used. However, it must be replaced with 0W-16 at the next oil change.”
From my personal experience, I used to use Mobil 1 and Pennzoil Ultra Platinum oils, which are really high-quality oils. However, I did notice a big difference when I began using the OEM Mazda oil. I don't know what is so different about it, but my engine runs much more smoothly and very quietly. When I am at a stop light, I don't even feel the engine running, it's gotten that quiet, and I just hit over 100k miles.
I use Mazda Moly 0w-20 in our 2014 Skyactiv CX-5.
I suggest you to use 5W40. I have a Toyota Auris and i change them every 7.500km without filter change and at 15.000 km with filter change. In my city at summer the temperature is about 40°C on summer and I have 257.000 km. I haven't any problems till now. My engine running smooth and never burned oil.
I plan to run Toyota oil in my rav4. In the past, I would have never considered running OEM oil and I would tell most people it's a waste of money to do that. However, I've seen a few reports showing Toyota 0w-16 as having more than 700ppm of molybdenum in it, and it isn't from assembly lube used when putting the engines together.
Toyota oil is pretty good, actually. Lots of moly and a good additive package for overall protection.
Remember that the rotary engine burns oil by design and does not particularly like eating synthetics. Expect to use old fashioned dino juice and change your oil every 3000 miles.
Although this is exact replacent, mazda OE still uses Mazda branded GF-5 which is exactly the same oil but branded Mazda....
Love these high molly low viscosity oils. Absolutely the best out there
They should be using 0W20 full synthetic oil (not synblend crap). Its not going to hurt running the 5W20 in it instead but next time mention it at write up. Mazda claims benefits such as better cold start protection and better efficiency among other things.
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