I’ve always used 5W-30 Castrol Edge Titanium, available at Wal Mart. My Blackstone report came back good a long time ago on it.
For Motul you want xcess not X-clean. X-clean is only for things with direct injection. I would do xcess or t6, ether work in 5w-40. I do both of them with my stage 2.6 IAG block as they recommend. Mostly Motul, but the last change I did was t6 since I could not get motul locally or in a reasonable amount of time.
Used to use Motul, now switched to Red Line for the higher zinc content and high heat stability. I rallycross my daily so high RPM and high heat.
I run the Rottela 15w40 in my stock 05 Subaru Legacy GT (EJ255) and my mk4 supra turbo. Haven't had issues with the cats on the Subie, I do plan to remove them tho
Liqui-Moly produce good oil in general, in my country all subaru enthusiasts use it for engines also!
[Valvoline SynPower](http://www.valvoline.com/products/brands/synpower/full-synthetic-motor-oil/5) is what I have run since I purchased my 2012 Subaru Legacy.
I use Castrol or Pennzoil most of the time (N/A engine or I'd use Rotella) haven't had any issues with it.
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This part for Subaru Legacy is made around the world. We have reviews for engine oil manufacturers from countries such as: Netherlands, France, Germany, USA .
In March 2026, the ranking of engine oil for Subaru Legacy on PartReview included 7 manufacturers. It is based on 7 reviews and 21 vote.
Last month, PartReview users preferred Shell. 14% of positive votes went to this manufacturer.
In second place: engine oil MOTUL — 14%.
Third place: Castrol with 14% of the votes.
In the overall ranking of engine oil, which aggregates opinions of owners of different car makes and models, these brands hold the following positions:
After seeing which engine oil owners of Subaru Legacy prefer, check other popular parts for this car. In March 2026, leaders on PartReview were:
