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Spare parts reviews ➔ All comparisons ➔ OEM Subaru ➔ Lucas

Engine oil OEM Subaru or Lucas

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OEM Subaru
Lucas
OEM Subaru › Engine oil
CRYPTIC_SUNSET
  • Exhaust smoke:
Rating 4.0

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.

Pros: burns half that
Cons: oil consumption
Mileage: 195000 km
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OEM Subaru › Engine oil
ajuscojohn
Rating 4.0

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.

Pros: Forester seems happy
Cons: mileage may have dipped
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OEM Subaru › Engine oil
Bai13579
Rating 4.5

I had a 2017 Forester with 175k miles on it and only used factor oil and never had any issues. I did not do any off road stuff and it was only a premium model, not a wilderness model. I don’t think it matters as long as you change it regularly.

Pros: no issues, engine longevity
Mileage: 175000 km
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Lucas › Engine oil
Cool-Tap-391
  • Engine noise:
Rating 3.0

Lucas OS works great. It's some amazing stuff, BUT. Do not go over your oil change intervals. Once the Lucas additive starts breaking down it turns to a nasty varnish. Went 7k using synthetic amsoil z-rod and Lucas OS, on a new rebuilt 4.0l. Lost a lifter and ate up the cam lobe.

Pros: amazing stuff
Cons: turns to nasty varnish
Mileage: 7000 km
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Lucas › Engine oil
matchboxtx
  • Engine noise:
Rating 3.0

That looks like you dropped a valve. Yes Lucy’s oil will help. It will lubricate the chamber so you can take out all the pieces.

Pros: will lubricate the chamber
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OEM Subaru › Engine oil
Tyesokay
  • Engine noise:
Rating 1.0

Do not listen to them. I have a 2015 forester non turbo I used 5w30 and had all kinds of problems id get codes for over advanced timing on one bank and under advanced on the other, I was getting power loss going uphill, weird chattering noise.

Cons: power loss, weird noise
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Which engine oil to choose — OEM Subaru or Lucas?

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 OEM Subaru and Lucas
  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 — Lucas or OEM Subaru?

In March 2026 on PartReview, engine oil OEM Subaru were overall better than Lucas.

  1. OEM Subaru received a PR Score of 81 out of 100, and Lucas scored 78 points.
  2. OEM Subaru ranked 21 in the overall ranking, and Lucas ranked 31.
  3. The average rating is higher for OEM Subaru (3.9) than for Lucas (3.8).
  4. Engine oil OEM Subaru have better feature ratings than Lucas:
    • Exhaust smoke - owners believe, that this property for Lucas is better than OEM Subaru.
    • Engine noise - drivers claim, that this property for OEM Subaru is outperforms Lucas.
    • Warning light - reviews suggest, that this property for Lucas is preferred to OEM Subaru.

Which engine oil are more popular — OEM Subaru or Lucas?

In March 2026 on PartReview, engine oil OEM Subaru were overall more popular than Lucas.

By vote balance, engine oil OEM Subaru surpassed Lucas:

  • For OEM Subaru, the ratio of positive (77) to negative (17) votes is 60 votes.
  • For Lucas, the ratio of positive (58) to negative (16) votes is 42 votes.

By number of reviews, engine oil OEM Subaru surpassed Lucas:

Which engine oil do car owners prefer — OEM Subaru or Lucas?

In March 2026, according to PartReview, engine oil OEM Subaru led more car-specific ratings than Lucas:

OEM Subaru are chosen by owners of cars such as: Subaru Forester, Subaru Impreza, and others.

Engine oil Lucas 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 OEM Subaru with: Mobil, Castrol, LIQUI MOLY, MOTUL, Shell, AMSOIL, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota.

Also available: comparisons of engine oil Lucas with: Mobil, Castrol, LIQUI MOLY, MOTUL, Shell, AMSOIL, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota.

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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