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Spare parts reviews ➔ All comparisons ➔ IDEMITSU ➔ Lucas

Engine oil IDEMITSU or Lucas

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IDEMITSU
Lucas
IDEMITSU › Engine oil
Possible-Aerie-8828
  • Engine noise:
Rating 5.0

I buy 5 OE Toyota filters at a time from Amazon ( approximately $6 ea ) Purchase Ow-20 Idemitsu oil from NAPA ( ships free to my home ) in the cost saving 6gal box ( 24 qts ) for about $125 with their online coupon. Use this in both my Avalon and my Tundra- both run like a dream.

Pros: cars run like a dream, cost-saving
Vehicle: Toyota Avalon
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IDEMITSU › Engine oil
random-guy1947
Rating 4.0

This is normal. Wait till it gets below 1k rpm. Modern engines do not need a lot of time to idle after cold start, the ECU handles it. Although, for a few kilometres, do not push very hard. The engine oil (0w-20 idemitsu) is thin, and needs time to lubricate well.

Pros: thin, needs to lubricate
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Lucas › Engine oil
No_Work_5746
Rating 4.5

I have a 2012 gmc terrain 2.4l currently at 202k. I’ve used Lucas oil and restore and protect Valvoline oil the last 50k. Still runs like a gem with 177-182-179-175 compression cylinders 1-4. Used to be 155-149-144-168 before I started using both these oils

Pros: runs like a gem
Mileage: 202000 km
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Lucas › Engine oil
templeofdank
Rating 4.0

I exclusively have used Lucas oil for my sportster motor for 5 years. The bottle looks cool, that's it. Full synthetic oil, no frills, cheap, and easy to get.

Pros: cheap, easy to get
Cons: no frills
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IDEMITSU › Engine oil
NefariousN1nja
Rating 5.0

Switch to Idemitsu ( Japanese oil ) - Manufacturers for genuine and even does factory fill for many, they are very premium oils with starting segment already beating the top shelf of alternative brands.

Pros: premium oils, beating alternative brands
Vehicle: Toyota
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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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IDEMITSU › Engine oil
ExtraGlutenPlzz
Rating 3.0

So if you review the virgin oil analysis database, it includes idemitsu 0w-20 and 5w-30 and for both, the TBN is rather weak in comparison to other more readily available blends, also, the viscosity at 9.5 cSt for a 30w, some 20w come close to that. Does any of that matter? Not a whole lot, but it shows that there's nothing special about the oil. Generally speaking, higher TBN is better.

Pros: nothing special about oil
Cons: TBN is rather weak
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Lucas › Engine oil
Fireblade987
  • Exhaust smoke:
Rating 1.0

I used the middle one on an old 200,000KM Porsche Cayman S that was burning oil. It made it worse, smoke started coming out of the engine when the oil cap was off and I felt like the engine would soon die.

Cons: made it worse, smoke
Vehicle: Porsche Cayman
Mileage: 200000 km
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Which engine oil to choose — IDEMITSU 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 IDEMITSU 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 IDEMITSU?

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

  1. IDEMITSU received a PR Score of 97 out of 100, and Lucas scored 78 points.
  2. IDEMITSU ranked 14 in the overall ranking, and Lucas ranked 31.
  3. The average rating is higher for IDEMITSU (4.8) than for Lucas (3.8).
  4. Engine oil IDEMITSU have better feature ratings than Lucas:
    • Engine noise - owners believe, that this property for IDEMITSU is better than Lucas.
    • Exhaust smoke - drivers claim, that this property for IDEMITSU is outperforms Lucas.
    • Warning light - reviews suggest, that this property for Lucas is preferred to IDEMITSU.

Which engine oil are more popular — IDEMITSU or Lucas?

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

By vote balance, engine oil IDEMITSU surpassed Lucas:

  • For IDEMITSU, the ratio of positive (83) to negative (2) votes is 81 vote.
  • For Lucas, the ratio of positive (58) to negative (16) votes is 42 votes.

By number of reviews, engine oil IDEMITSU surpassed Lucas:

Which engine oil do car owners prefer — IDEMITSU or Lucas?

In March 2026, according to PartReview, engine oil IDEMITSU and Lucas have not taken top places in car-specific ratings. You can help by adding your review about these manufacturers.

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 IDEMITSU 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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