For [Naturally-Aspirated Skyactiv engines](https://en.wikipedia.org/wiki/SkyActiv), it is highly recommended that you use Mazda's own(Idemitsu) high molly GF-5 0w-20. [Arguably it is one of the best oil for skyactiv engines](http://www.cleanmpg.com/community/index.php?threads/45295/#post-357910).
Started using restore and protect a few months and 4k miles ago. No leaks either.
I run Valvoline Restore and Protect. It may be overkill, but I change it every 4-5,000 miles.
If you wanna try and solve the oil burning though, try using either Valvoline Restore and Protect 5w-30 engine oil at your next oil change (and use it for top ups as well) or Valvoline Maxlife 5w-30. If you find your burning oil while driving, it’s probably gummed up piston rings in which case use the Restore and Protect- it’ll take a bit (4 consecutive oil changes) but it’s the only off the shelf oil available that will completely clean the rings and stop the burning.
I've been running Valvoline for the moly content. Not burning oil yet, fingers crossed.
I'd recommend using some Valvoline for your oil changes from now on, particularly their Restore & Protect line. It shut those noisy lifters up in 2 oil changes on my old '09 Avalon, and good lord did it flush out a bunch of gunk I didn't know was in there. I got a few MPG's more after it was said and done, too, and she ran happy.
Use good oil, always helps. Try valvoline restore and Protect. Quieted my engine down a little
I used to use Rotella T4 as recommended by many on the forums. It was fine but I switched to Valvoline 20w50 because it has the additional Zinc like the Rotella T4, and a bit better film strength which protects bearings at high RPM.
I’ve had good luck running Valvoline VR-1 in engines with flat tappet cams.
Many reputable rotary shops have tested numerous oils over the years, and agreed that the bearings do not have adequate protection with 5w-20 or 5w-30, especially if you track the car or do any spirited driving regularly.
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