List of 0W-20 oils by base-oil-quality index (BOQI): 2018

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Rank BOQI DV-35 NOACK Date purchased Oil



1 84.3 4,110 10.10 2014/02/16 Mobil1 Synthetic API SN, ILSAC GF-5, SAE 0W-20 motor oil

2 83.3 3,928 10.70 2015/12/28 Mobil 1 Full Synthetic SAE 0W-20 dexos1

3 81.9 4,316 9.90 2018/01/25 Genuine Nissan Full Synthetic SAE 0W-20 Motor Oil

4 80.4 5,122 8.50 Amsoil PDS AMSOIL Signature Series Synthetic Motor Oil 0W-20 (ASM)

5 78.2 4,182 10.70 2017/03/06 Mobil 1 Advanced Fuel Economy Full Synthetic SAE 0W-20 dexos1

6 66.1 4,102 12.90 2018/01/24 Genuine Toyota Synthetic SAE 0W-20

7 59.0 5,929 10.00 2018/03/12 SuperTech High Mileage Full Synthetic SAE 0W-20 Motor Oil

8 57.8 5,884 10.30 2017/03/06 Pennzoil Platinum Full Synthetic with PurePlus™ Technology SAE 0W-20 dexos1

9 57.1 6,068 10.10 2015/12/28 Pennzoil Platinum Full Synthetic SAE 0W-20 dexos1

10 54.9 5,958 10.70 2014/02/06 Quaker State Synthetic API SN, ILSAC GF-5, SAE 0W-20 motor oil

11 54.0 5,448 11.90 2015/04/01 Beck/Arnley Premium OE Fully Synthetic SAE 0W-20

12 54.0 5,949 10.90 2018/03/12 Royal Purple Synthetic Oil SAE 0W-20 High Performance Motor Oil

13 53.2 5,721 11.50 2015/12/28 Valvoline Full Synthetic SYNPower SAE 0W-20

14 53.0 5,006 13.20 2015/12/28 SuperS SuperSyn Full Synthetic SAE 0W-20

15 51.9 5,819 11.60 2017/03/06 Valvoline Full Synthetic SYNPower SAE 0W-20 dexos1

16 51.7 5,642 12.00 2018/01/24 ACDelco Synthetic SAE 0W-20

17 51.2 5,342 12.80 2017/12/09 Honda Full Synthetic SAE 0W-20 Motor Oil

18 49.8 5,537 12.70 2015/12/28 Castrol Edge Full Synthetic SAE 0W-20 dexos1

19 49.5 5,996 11.80 2017/03/07 O'Reilly SAE 0W-20 Full Synthetic dexos1 Motor Oil

20 48.6 5,451 13.20 2014/08/14 Castrol Edge Synthetic Motor Oil API SN, ILSAC GF-5, SAE 0W-20 motor oil

21 47.6 5,658 13.00 2015/07/27 STARFIRE SAE 0W-20 Full Synthetic dexos1

22 47.2 5,657 13.10 2014/02/07 Pronto Supreme API SN, ILSAC GF-5, SAE 0W-20 motor oil

23 47.2 4,981 14.90 2014/08/25 Starfire Motor Oil API SN, ILSAC GF-5, SAE 0W-20 motor oil

24 46.2 5,786 13.10 2015/12/28 ProLine Full Synthetic SAE 0W-20 dexos1

25 45.6 5,113 15.00 2014/12/01 i-Sint XL 4AM Synthetic SAE 0W-20, API SN, ILSAC GF-5

26 44.9 5,647 13.80 2017/12/09 i-Sint XL 4AM Synthetic Engine Oil SAE 0W-20

27 43.5 6,138 13.10 2017/03/06 STP SYN Full Synthetic SAE 0W-20 dexos1

28 43.1 5,723 14.20 2016/01/25 AMSOIL Synthetic OE SAE 0W-20 Motor Oil

29 41.8 5,814 14.40 2014/02/07 MAG1 API SN, ILSAC GF-5, SAE 0W-20 motor oil

30 39.7 6,163 14.30 2014/08/11 Federated Motor Oil API SN, ILSAC GF-5, SAE 0W-20 motor oil

If there are any questions regarding BOQI, see the previous threads (original and follow-up).
 
So M1 0W-20 will protect my door hinges in my car best?
lol.gif
 
How do we know BOQ when it is proprietary?
Also formulations change and many of these are old.
 
Last edited:
Originally Posted By: Eddie
DV-35?


CCS (Cold Cranking Simulator)...is dynamic viscosity...and for 0W, is at -35C

If considering the number, and the interaction of both base oils and additives, including polymeric viscosity improvers, I would have choses MRV, as it's artificially thickened over the base oil viscosity by the VM components.
 
Originally Posted By: Shannow
Originally Posted By: Eddie
DV-35?

CCS (Cold Cranking Simulator)...is dynamic viscosity...and for 0W, is at -35C
If considering the number, and the interaction of both base oils and additives, including polymeric viscosity improvers, I would have choses MRV, as it's artificially thickened over the base oil viscosity by the VM components.

Since the PQIA doesn't share MRV test results, this would be a pretty short list using that instead of CCS.

Shannow, didn't you tell us a while ago that a MRV/CCS ratio of over 2 was an indication of the use of a lot of PPD or other additives?
 
Yep, I did.

And the value/quality of a list shouldn't be on how many data points it contains, especially if the premise is incorrect.
 
Originally Posted By: FordCapriDriver
So M1 0W-20 will protect my door hinges in my car best?
lol.gif

Amsoil will last up to 25,000 miles !!!
 
Nice list but inventing your own metric based on just 2 (of your own choosing) out of the many standard ASTM tests cannot be used to rank motor oils. And it sure can't be used to infer 'base oil quality' which is what you called it.

The whole premise of your metric is flawed in my opinion. Hats off to you for putting the time into it though.

The formula itself is pretty arbitrary too, the computation you used. The two tests are in completely different units. You can't take an arbitrary constant 2,000,000 and divide it by the product of two quantities that are measured in units (but different units) and the result is a dimensionless quanity used to 'rank' oils.


I also dispute how those measurements can be named "base oil quality" since a) you can't prove or demonstrate that either CCS or NOACK values are determined by base oils -- they are the measurements of the complete motor oil (base oil + additive package); b) both the base oil mixture and the additive package are proprietary, and oil companies do not list ingredients out of the bottle.
 
What 0W-20 M1 oil is rated #1 and #2? AFE and EP are the only two oils I frequently see and AFE is listed.

AP recently came out with a 0W-20 so which witch is which?
 
Originally Posted By: 2015_PSD
What 0W-20 M1 oil is rated #1 and #2? AFE and EP are the only two oils I frequently see and AFE is listed.

AP recently came out with a 0W-20 so which witch is which?

PQIA has only tested the vanilla M1 0W-20. Unfortunately, there is no data on EP or AP. I would expect these to have better base oils and have higher BOQI indexes than the vanilla M1 but we can't know without actual data.

Also, the latest data (2017) for the vanilla M1 is the #5-ranked one.
 
Originally Posted By: 2015Corolla
The current champion is less than 4 bucks a quart?

welcome2.gif


Ha! You're indeed right that Genuine Nissan Motor Oil (GNMO) 0W-20 SN by ExxonMobil is the current BOQI champion! I didn't realize that.

The MSDS (link) is claiming that it's mostly GTL. It's interesting that many oils made by ExxonMobil recently are using GTL. Good for ExxonMobil oils, as GTL is a great base oil! It's also interesting that these are scoring higher than the Pennzoil PurePlus GTL-based oils.

Some caveats (PQIA link): There is no moly but there is some titanium. There is no magnesium but there is some sodium, not sure if it's a detergent.

It's amazing that you can get arguably the oil with the world's best base oil tested by PQIA for $3.83 a quart with free shipping and no tax.

AZp83kXcDakb84wVVl25x8PymbLFZVyPdRvwMb4r6vZetdMHoE8sD0-cUiR7nmGHHD-lZtD4AzezZ6or2AZRxq8c3deZBznVuRmwP3sX7wn9CGu0W8cKILUq8ONaobAqyvLB-5UPJ3P6uskz-OEuHyyK9sYYy7ekaCbgh7t7MXGq_cZ7ZWRaY7_U71fW_Ft0CN7b6CV4oN6wxZW9LXz8ZcBDao_OneDB0VuNXlnifmdiZuOXOPmupWskoEbu2xfi6cav4iGfMA2nXSfYCJ-bWoCQN1O4yRUHqXPI1OGD19lUtLi4om9lRfBS09ylhiIbk-ntIiGZAGE5rhnr4o2iinlRkym652ZevfjQUIWAicj6VOluPt3j0QwGrQfq_tXl_WxJIrthT0Mg1uVCGwElJOs_R4A7IcUIFOHrpPw089kMvFsbMIlQaogydkQfTX8ECZH5wOhiHXgsLD54dw31JPP6pDrMOs04ajguFAjzpm1aRJGUNHWRBEINomKBoxKS3536AkOk_WqQESt5AgZQbadpG9FR3obqZs2S6ywfm00Rpyvs2n-9t1tmrzl8HiLORlgkbkcIFjUeNtN8JU9tCipfT0NO0BS9mryeV-Nt=w1469-h637-no


Good catch!
 
Originally Posted By: Gokhan
Originally Posted By: 2015Corolla
The current champion is less than 4 bucks a quart?

welcome2.gif


Ha! You're indeed right that Genuine Nissan Motor Oil (GNMO) 0W-20 SN by ExxonMobil is the current BOQI champion! I didn't realize that.

The MSDS (link) is claiming that it's mostly GTL. It's interesting that many oils made by ExxonMobil recently are using GTL. Good for ExxonMobil oils, as GTL is a great base oil! It's also interesting that these are scoring higher than the Pennzoil PurePlus GTL-based oils.

Some caveats (PQIA link): There is no moly but there is some titanium. There is no magnesium but there is some sodium, not sure if it's a detergent.

It's amazing that you can get arguably the oil with the world's best base oil tested by PQIA for $3.83 a quart with free shipping and no tax.

AZp83kXcDakb84wVVl25x8PymbLFZVyPdRvwMb4r6vZetdMHoE8sD0-cUiR7nmGHHD-lZtD4AzezZ6or2AZRxq8c3deZBznVuRmwP3sX7wn9CGu0W8cKILUq8ONaobAqyvLB-5UPJ3P6uskz-OEuHyyK9sYYy7ekaCbgh7t7MXGq_cZ7ZWRaY7_U71fW_Ft0CN7b6CV4oN6wxZW9LXz8ZcBDao_OneDB0VuNXlnifmdiZuOXOPmupWskoEbu2xfi6cav4iGfMA2nXSfYCJ-bWoCQN1O4yRUHqXPI1OGD19lUtLi4om9lRfBS09ylhiIbk-ntIiGZAGE5rhnr4o2iinlRkym652ZevfjQUIWAicj6VOluPt3j0QwGrQfq_tXl_WxJIrthT0Mg1uVCGwElJOs_R4A7IcUIFOHrpPw089kMvFsbMIlQaogydkQfTX8ECZH5wOhiHXgsLD54dw31JPP6pDrMOs04ajguFAjzpm1aRJGUNHWRBEINomKBoxKS3536AkOk_WqQESt5AgZQbadpG9FR3obqZs2S6ywfm00Rpyvs2n-9t1tmrzl8HiLORlgkbkcIFjUeNtN8JU9tCipfT0NO0BS9mryeV-Nt=w1469-h637-no


Good catch!


Virgin TBN of 7.71 is very low. This oil is probably only good for ~7K miles max. You get what you pay for in this case.
 
Originally Posted By: HKPolice
Virgin TBN of 7.71 is very low. This oil is probably only good for ~7K miles max. You get what you pay for in this case.

Perhaps in theory but not necessarily at all in real practice.

I ran the original formulation of TGMO 0W-20 SN by ExxonMobil, which had a virgin TBN of only 6.20, several times. I never had issues with neither TBN nor TAN in my UOA's, TBN always staying above TAN, despite running it in a very old engine. Needless to say, Toyota recommends a 10,000-mile OCI on it. You can Google my TGMO 0W-20 SN VOA and UOA's. I don't know anyone who had TBN issues with it either.

Regarding the price, it's merely a bargain catch on eBay. I bet the Nissan dealer charges you $10 - 12 a quart. Once the guy on eBay sells out his stock, you will never be able to get this extremely low price of $3.83 a quart with free shipping and no tax.
 
Originally Posted By: Gokhan
Originally Posted By: HKPolice
Virgin TBN of 7.71 is very low. This oil is probably only good for ~7K miles max. You get what you pay for in this case.

Perhaps in theory but not necessarily at all in real practice.

I ran the original formulation of TGMO 0W-20 SN by ExxonMobil, which had a virgin TBN of only 6.20, several times. I never had issues with neither TBN nor TAN in my UOA's, TBN always staying above TAN, despite running it in a very old engine. Needless to say, Toyota recommends a 10,000-mile OCI on it. You can Google my TGMO 0W-20 SN VOA and UOA's. I don't know anyone who had TBN issues with it either.

Regarding the price, it's merely a bargain catch on eBay. I bet the Nissan dealer charges you $10 - 12 a quart. Once the guy on eBay sells out his stock, you will never be able to get this extremely low price of $3.83 a quart with free shipping and no tax.


I don't trust wear check for their virgin TBN analysis. 6.2 is way too low and other VOAs have revealed the old TGMO formula at around 8 TBN new: http://www.oil-club.ru/forum/topic/8410-toyota-genuine-0w-20-kanistra-plastik/

The newest TGMO has a virgin TBN of 10 confirmed by both oil club & PQIA: http://www.oil-club.ru/forum/topic/31986...ka-new-svezhee/ http://pqiadata.org/Toyota_0W20.html

This indicates that Toyota knew that a TBN of 8 was borderline for their 10K mile interval so they increased it to 10. They wouldn't have changed the formula otherwise.

Your UOA on the old Toyota 4A isn't representative of modern engines that run much hotter & leaner for fuel economy reasons, so it's much lighter on oil than a short tripped modern TGDI for example.

A 7.71 TBN in the Nissan oil may hit 10K miles if the car was never short tripped especially in an older less stressful engine. But throw in 50% city traffic short tripping into the mix and things don't look good beyond 5K miles, especially since the add pack is all calcium (magnesium add backs are better at TBN retention).
 
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