Owner reviews for engine oil

They also have the 5qts of Castrol Edge 5w-40 for under $30. I've been running that in my cars since 2005.

I'm using Mobil 0w-20, no problems here.

Valvoline full synthetic 0W-20 changed every 5k, oil filters I prefer oem but recently it’s been whatever is on sale at advanced auto

Subaru OEM oil is Idemitsu 0W-20. I currently use Idemitsu Zepro\* 0W-20, a high-moly formulation from the same manufacturer.

Eneos 0-20.

Last change I did was with Castrol Edge 0w-20 no issues.

If I feel like spending money I\u2019ll buy Redline or Motul, they\u2019re Group 5. If I wanna be cheap and still want really good oil I\u2019ll buy Rotella T6.

That's the wrong oil. You want the Idemitsu eco gold medalist advanced moly 0w-20, which is basically the same as Mazda oil(Idemitsu makes the mazda oil).

I only ran liqui moly in my TDI and have been running it in my R since I bought it. IMO they are one of the best brands.

Pennzoil Ultra Platinum has been doing well in my UOAs.