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Spare parts reviews ➔ All comparisons ➔ Shell ➔ Motorex

Engine oil Shell or Motorex

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Shell
Motorex
Shell › Engine oil
QueenAlpaca
  • Exhaust smoke:
Rating 5.0

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.

Pros: keep oil burning down
Vehicle: Subaru
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Shell › Engine oil
Familiar_Play_4915
  • Engine noise:
  • Exhaust smoke:
Rating 5.0

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.

Pros: healthy engine, no issues
Mileage: 370000 km
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Motorex › Engine oil
rat_trap69
Rating 5.0

At the end of the day, pretty much anything in spec will work fine.

That being said, I did a bunch of research for my V85 and determined that Motorex Cross-Power does the best in high demand applications. Air cooled engines can have a really wide temp range. That's what I use.

Pros: best in high demand
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Which engine oil to choose — Shell or Motorex?

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:

Comparison of engine oil Shell and Motorex
  1. PR Score.
  2. Overall ranking.
  3. Vote balance.
  4. Average rating.
  5. Number of reviews.
  6. Feature ratings.
  7. Car owners’ choice.

Which engine oil are better — Motorex or Shell?

In March 2026 on PartReview, engine oil Shell were overall better than Motorex.

  1. Shell received a PR Score of 94 out of 100, and Motorex scored 84 points.
  2. Shell ranked 4 in the overall ranking, and Motorex ranked 27.
  3. The average rating is higher for Shell (4.5) than for Motorex (4.3).
  4. Engine oil Shell have better feature ratings than Motorex:
    • Engine noise - owners believe, that this property for Motorex is better than Shell.
    • Warning light - drivers claim, that this property for Shell is outperforms Motorex.
    • Exhaust smoke - reviews suggest, that this property for Shell is preferred to Motorex.

Which engine oil are more popular — Shell or Motorex?

In March 2026 on PartReview, engine oil Shell were overall more popular than Motorex.

By vote balance, engine oil Shell surpassed Motorex:

  • For Shell, the ratio of positive (1007) to negative (62) votes is 945 votes.
  • For Motorex, the ratio of positive (44) to negative (8) votes is 36 votes.

By number of reviews, engine oil Shell surpassed Motorex:

Which engine oil do car owners prefer — Shell or Motorex?

In March 2026, according to PartReview, engine oil Shell led more car-specific ratings than Motorex:

Shell are chosen by owners of cars such as: Honda Jazz, Subaru Outback, Subaru Impreza WRX, Subaru Legacy, Volkswagen Scirocco, and others.

Engine oil Motorex have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.

Other comparisons of engine oil

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 Motorex 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.

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