using a heavier oil weight has been an old trick to help with oil consumption in Subarus for a long time now. I used to use Rotella 5w40 (before the reformulation) in my old 04 Baja Turbo and that particular oil was the best to keep the oil burning down.
My regular since i think 2014 or so has been helix ultra 5w40 running in all my vehicles currently.
I run 0w30 in my F82 M4 as that's what BMW and Shell recommend.
shell long ride sulit for honda click
I am using 15W40 Shell Oil for the last 8 years. No issues. 160k Kms on the Odometer
I have always used shell 10w-40 and did regular oil changes around 4-4.5k. Faced no issues what so ever, engine was still healthy, no oil consumption, almost same performance.
Time to change the oil, anyway, at 3,867 mi. I do 5-6k on the regular, but would use this as an opportunity to change.
I run rotella T6 5w-40. Have for 120k miles and will for the next 120k
Ive used T6 with good results. The major drawback with T6 is foaming, it's less than great in that regards.
Had a Q5 and it was a money pit. Oil Consumption got so bad I was putting in a quart every 400 miles.
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If choosing engine oil across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare engine oil across these categories:
In March 2026 on PartReview, engine oil Shell were overall better than OEM Audi.
In March 2026 on PartReview, engine oil Shell were overall more popular than OEM Audi.
By vote balance, engine oil Shell surpassed OEM Audi:
By number of reviews, engine oil Shell surpassed OEM Audi:
In March 2026, according to PartReview, engine oil Shell led more car-specific ratings than OEM Audi:
Shell are chosen by owners of cars such as: Honda Jazz, Subaru Outback, Subaru Impreza WRX, Subaru Legacy, Volkswagen Scirocco, and others.
Engine oil OEM Audi have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of engine oil Shell with: Mobil, Castrol, LIQUI MOLY, MOTUL, AMSOIL, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota, Mannol.
Also available: comparisons of engine oil OEM Audi with: Mobil, Castrol, LIQUI MOLY, MOTUL, AMSOIL, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota, Mannol.
You can also see who is better among other engine oil manufacturers: Mobil or Castrol, Mobil or LIQUI MOLY, Mobil or MOTUL, Mobil or Shell, LIQUI MOLY or Castrol.
