vs
Engine oil IDEMITSU or OEM Audi
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
Time to change the oil, anyway, at 3,867 mi. I do 5-6k on the regular, but would use this as an opportunity to change.
Vehicle:
Audi Q5
Mileage: 6223 km
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 an 2007 A4 2.0T base. I bought the car with 120k miles on it in 02/19. Yesterday I hit the 224k miles on it. She's my daily driver, over the years I have changed/did the engine oil every 4k miles, car filters all over, wheel alignment, tires, brake pads, rotors, and the battery. Nock on the wood, my baby have been taking car of me. I'm actually surprised that this model is solid af.
Pros: model is solid af
Vehicle:
Audi A4
Mileage: 360000 km
I have a 17 grand touring and I use idemitsu 0w/20 and purolator b9ss filters.
Vehicle:
Mazda 6
Part number: B9SS
I always buy OEM oil from dealer and then get it done at the shop or do it my self sometimes. Just prefer that way cuz I care way too much.
Pros: preferred, trusted quality
Vehicle:
Audi TT
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
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
New Audi do not have the oil sticks to check the oil levels, so they always under pour the engin oil in the car, my q8 is been serviced by Audi and past 2 years I have to top up oil (which is free as car is under warranty) but last month I got pissed and asked them to top it up to max and car runs much smoother and fuel consumption for 1 full tank is 130 km better.
Pros: car runs smoother
Cons: have to top up
Vehicle:
Audi Q8
Had a Q5 and it was a money pit. Oil Consumption got so bad I was putting in a quart every 400 miles.
Cons: oil consumption bad
Vehicle:
Audi Q5
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Which engine oil to choose — IDEMITSU or OEM Audi?
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 — OEM Audi or IDEMITSU?
In March 2026 on PartReview, engine oil IDEMITSU were overall better than OEM Audi.
- IDEMITSU received a PR Score of 97 out of 100, and OEM Audi scored 73 points.
- IDEMITSU ranked 14 in the overall ranking, and OEM Audi ranked 32.
- The average rating is higher for IDEMITSU (4.8) than for OEM Audi (3.7).
-
Engine oil IDEMITSU have better feature ratings than OEM Audi:
- Engine noise - owners believe, that this property for IDEMITSU is better than OEM Audi.
- Exhaust smoke - drivers claim, that this property for IDEMITSU is outperforms OEM Audi.
- Warning light - reviews suggest, that this property for OEM Audi is preferred to IDEMITSU.
Which engine oil are more popular — IDEMITSU or OEM Audi?
In March 2026 on PartReview, engine oil IDEMITSU were overall more popular than OEM Audi.
By vote balance, engine oil IDEMITSU surpassed OEM Audi:
- For IDEMITSU, the ratio of positive (83) to negative (2) votes is 81 vote.
- For OEM Audi, the ratio of positive (65) to negative (23) votes is 42 votes.
By number of reviews, engine oil IDEMITSU surpassed OEM Audi:
- For engine oil IDEMITSU there are 28 reviews: 27 positive, 1 neutral, 0 negative.
- For engine oil OEM Audi there are 27 reviews: 17 positive, 7 neutral, 3 negative.
Which engine oil do car owners prefer — IDEMITSU or OEM Audi?
In March 2026, according to PartReview, engine oil IDEMITSU and OEM Audi 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 OEM Audi 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.