The 508 spec gets you better mpg and less dirty emissions. Gotta look at the bottle carefully. Mobil ESPX2 0w20 has that spec.
262k miles here on an M54B30 with 10k changes, Mobil 1, it's running great.
It should be fine. I use Mobil 1 and it's worked great.
My mom's impreza will loose oil between oil changes with 0w-20 and will be fine with 5w-30. It burns the thinner oil.
My wife\u2019s 2012 Impreza is at 195k miles and I switched it to 0w-30 and then 5w-30 due to oil consumption. Was burning a quart every 1K miles on 0w-20, burns half that on 5w-30. I\u2019m actually considering going thicker.
The dealership here itself was using 5w-30 as the default for oil changes even though 0w-20 is stamped on the filler cap. After checking myself that Subaru said that would be OK, I started using it too for my own changes just to avoid flipping back and forth -- though I have no idea if that would be a problem. In any case, the Forester seems happy, even if the mileage may have dipped slightly.
Engine does become a bit quieter with 5w-30.
I use Mobil one in Canada when it goes on sale synthetic 0W20 10 k intervals 13 yr old corolla 1.8 and 15 yr old tundra 5.7 350 k and 320 km ; no oil consumption work great
Expensive. I’d stick to Mobil 1 or Kirkland
Mobil 1 for me is like water in this car. I ran it for the longest time till I was tuned but switched over
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We compare engine oil across these categories:
In March 2026 on PartReview, engine oil Mobil were overall better than OEM Subaru.
In March 2026 on PartReview, engine oil Mobil were overall more popular than OEM Subaru.
By vote balance, engine oil Mobil surpassed OEM Subaru:
By number of reviews, engine oil Mobil surpassed OEM Subaru:
In March 2026, according to PartReview, engine oil Mobil led more car-specific ratings than OEM Subaru:
Mobil are chosen by owners of cars such as: Chevrolet Camaro, Infiniti G, Lexus IS, Opel Astra, Volvo V70, Chevrolet Corvette, Chevrolet Silverado, Ford Focus, Ford Mustang, Ford Ranger, Hyundai Sonata, Hyundai Tucson, Hyundai Veloster, Mazda 6, Volkswagen Jetta, and others.
OEM Subaru are chosen by owners of cars such as: Subaru Forester, Subaru Impreza, and others.
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For example, comparisons of engine oil Mobil with: Castrol, LIQUI MOLY, MOTUL, Shell, AMSOIL, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota, Mannol.
Also available: comparisons of engine oil OEM Subaru with: Castrol, LIQUI MOLY, MOTUL, Shell, 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.
