But then we replaced it with a SkyActiv Mazda3 that used 0w20 and proceeded to have a good long history with that motor that had 0 oil consumption in 125K miles; I did all of the oil changes myself and it was always 4.5qts in/4.5qts out every 5k miles.
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).
'17 f150 5.0l with 150k running 5w-20 motorcraft. Not a single problem and this was used to haul a 12' steel enclosed trailer loaded from day 1 and the wind blows a LOT here. Doesnt use a drop of oil.
2014 3, 0W-20 full synthetic (whatever major brand is cheapest) from brand new, every 7500 miles.
170k, runs like a top, burns not a single drop between changes, compression and fuel mileage exactly the same as new.
I run motorcraft in my mustang and have zero complaints.
I use Mazdas 5w-30 Ultra DPF. Mazda once said that this was the oil that they're using, so I guess what's used by mazda can't be too bad for the rex
I ran motorcraft for like 70,000km's and switched to amsoil 5w50 after that.
Could be weather related. I'm in Canada and we have weather from -35C to +35C, so Mazda recommends oil changes every 8000km instead of 12,000km.
Mazda’s OEM 5w30 is a little too thin for my blood considering the engine temps when driving hard, fine if you’re going to never redline the car
and the dealership where it got changed used 5w 20 motocraft they sell ford and thing of tht nature im pretty sure its to thin and wasnt synthetic
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