vs
Engine oil Eneos or IDEMITSU
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
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
I have a 17 grand touring and I use idemitsu 0w/20 and purolator b9ss filters.
Vehicle:
Mazda 6
Part number: B9SS
Eneos X Prime 0W-20
Eneos gamit ko for 6 years sa M3 ko. Wala pa dn usok gang Ngayon.
Pros: Wala pa usok
Vehicle:
BMW
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
Idemitsu 05-W30 from Unioil kasi I cant find Castrol for my Mazda
Cons: cant find Castrol
Vehicle:
Mazda
I use Eneos on my 2013 WRX since day one.
Vehicle:
Subaru
Idemitsu is responsible for the oil that powered the Mazda 787b; they know the rotary like no other. I exclusively use their synthetic 20w50 and premix.
Pros: knows rotary like no other
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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Which engine oil to choose — Eneos or IDEMITSU?
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:
- PR Score.
- Overall ranking.
- Vote balance.
- Average rating.
- Number of reviews.
- Feature ratings.
- Car owners’ choice.
Which engine oil are better — IDEMITSU or Eneos?
In March 2026 on PartReview, engine oil IDEMITSU were overall better than Eneos.
- Eneos received a PR Score of 97 out of 100, and IDEMITSU scored 97 points.
- Eneos ranked 16 in the overall ranking, and IDEMITSU ranked 14.
- The average rating is higher for IDEMITSU (4.8) than for IDEMITSU (4.8).
Which engine oil are more popular — Eneos or IDEMITSU?
In March 2026 on PartReview, engine oil IDEMITSU were overall more popular than Eneos.
By vote balance, engine oil IDEMITSU surpassed Eneos:
- For Eneos, the ratio of positive (77) to negative (2) votes is 75 votes.
- For IDEMITSU, the ratio of positive (83) to negative (2) votes is 81 vote.
By number of reviews, engine oil IDEMITSU surpassed Eneos:
- For engine oil Eneos there are 26 reviews: 25 positive, 1 neutral, 0 negative.
- For engine oil IDEMITSU there are 28 reviews: 27 positive, 1 neutral, 0 negative.
Which engine oil do car owners prefer — Eneos or IDEMITSU?
In March 2026, according to PartReview, engine oil Eneos and IDEMITSU 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 Eneos with: Mobil, Castrol, LIQUI MOLY, MOTUL, Shell, AMSOIL, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota.
Also available: comparisons of engine oil IDEMITSU 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.