Engine oil Eneos or OEM Subaru

Should be fine, but CHECK THE OIL FREQUENTLY. This series of engines is notorious for oil consumption problems, which may not appear at all when doing short trips, but suddenly it's drinking 1qt or more per 1000 miles on the highway.

Take a quart of oil with, especially if you don't have reliable data on how much your engine burns. Check it occasionally and top off if needed.

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

Yes, it is good advice. When a new engine is breaking in, there is a lot more wear metals. It's not uncommon to see metallic flakes or shimmer in the oil during your first oil change. Parts wear/bed in. That's why there is a break-in period on almost, if not all new cars.

I did my first oil change at 1k miles on my BRZ; I saw a lot of metal shavings come out of the oil. The oil also had a metallic shimmer to it. This is totally normal, but I want to get rid of all of that so it is not circulating around the engine post-break in period.

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.

For shits and giggles I switched to ENEOS 5w30 synthetic in my 2 current vehicles and now I'm able to go 5,000 miles between oil changes and while some oil is still consumed, it stays above the "add" line on the dipstick without adding oil between oil changes.

My '15 Forester will burn a quart of oil every 1000 miles if I run 0w20.

I switched to 5w30 and it's all good for 5000 miles

I’ve used Shaffer’s and now ENEOS and T6 when it was the in thing and I can’t really tell a huge difference.