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 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
My shop has a racing team and I've been using it ever since he got a sponsor.
I change my oil and the filter every 5000km,and my engine is running smooth after 280.000 Kms,with no oil consumption. Use ONLY full synthetic oil. Personally i use Eneos oil.
Been using Eneos & changing it every 4k miles/4 months. Congrats on the WRX
There is no “break-in oil” just ENEOS brand 0W-20. KIA and ENEOS have a partnership and the factory oil fill is this oil
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.
I use original Mazda oil and Nipparts for the filters. I live in Europe and I buy these for 80€ / 85$.
I'd stick with oem or put some better stuff like Motul or Eneos into it. Eneos has some relation to Honda oem oil I forget the story. I use to put only mutul into my car but have recently switched to Eneos, will be putting eneos 0w-20 race prior to tune.
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
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