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#4478579 - 08/03/17 09:13 PM List of oils by base-oil-quality index: 0W-20 oils
Gokhan Online   content


Registered: 12/29/10
Posts: 3014
Loc: Los Angeles, California
This is a follow-up on my previous thread that compared the 5W-xx oils:

List of oils by base-oil-quality index: a ranking

Another one of the ultimate questions asked on BITOG is how the base-oil quality of 0W-20 oils compare to that of 5W-20 oils. Some people are afraid of 0W-20 oils because they think they are made of very thin base oils and will evaporate and leave deposits. However, you (and they) will find these results very interesting and contrary to these myths.

I define the base-oil-quality index (BOQI) as follows:

BOQI = (2,000,000)/(DV-30)/(NOACK) (useful for 5W-xx oils)

or

BOQI = (3,500,000)/(DV-35)/(NOACK) (useful for 0W-xx oils)

Here the unit for the DV-30 and DV-35 is cP and the NOACK volatility is expressed as a percentage. 2,000,000 in the original formula is a number I chose so that the highest base-oil-quality indexes (BOQIs) approach 100, while it's still possible to have numbers above 100.

In the formula for 0W-xx oils, I chose 3,500,000. This is because according to the ASTM D5293 - 15 paper, the value for DV-35 is typically 1.75 times the value for DV-30. This way we can at least roughly compare the 0W-xx oils to 5W-xx oils using the BOQI. However, this is not exact, and the 5W-xx BOQI numbers should only be compared to the 0W-xx BOQI numbers in the ballpark.

(Note: Some people also questioned the physical units of BOQI. It's inverse pressure if you realize that for physical NOACK is actually inverse time.)

The data was all taken from the independent PQIA except for the Amsoil Signature Series.

As always the base-oil quality alone doesn't dictate the overall oil quality. Detergents, additives, friction modifiers, and the viscosity-index improver are equally important.

With all this said, here are the main takeaways:

(1) Unlike 5W-20 oils, the base oils of 0W-20 oils are of consistently high quality.

(1) The base oils of 0W-20 oils are usually superior to the base oils of 5W-20 oils. Therefore, they should usually perform better in any engine than 5W-20 oils, including turbocharged engines, leaving to less deposits and resulting in the longest oil-change intervals. Less frequently 0W-20 and 5W-20 base-oil quality is comparable.

(2) 2014 Mobil 1 AFE 0W-20 is the now all-time BOQI champion, easily beating the old, discontinued Pennzoil Ultra. The current formulation is still excellent. However, the base-oil quality of M1 AFE 0W-20 seems to be going down every year, meaning they are putting less and less PAO in it every year.

(3) GTL (Pennzoil Platinum PurePlus) comes nowhere near PAO (Mobil 1 AFE) in base-oil quality. GTL quality is superior to that of plain Group III/III+ but it's nowhere near PAO. GTL-based formulations tended to have comparable base-oil quality for 5W-xx and 0W-20.

(4) Valvoline did well.

(5) The current champion is Amsoil Signature Series.

(6) 0W-20 myths have been debunked.

Here are the full results. The unit for DV-30 is cP and NOACK is a percentage (even though the physical quantity is percentage per hour). The base-oil-quality index (BOQI) is treated as a dimensionless quantity (physically it has the units of inverse pressure) and can in principle exceed 100. Note that the base oil may vary wildly with the manufacture date.

0W-20 oils:

Code:
Rank	BOQI	DV-35   NOACK   Date    Oil

1	84.3	4,110	10.10	2014	Mobil1 Synthetic API SN, ILSAC GF-5, SAE 0W-20 motor oil.
2	83.3	3,928	10.70	2015	Mobil 1 Full Synthetic SAE 0W-20 dexos1
3	81.6	4,290	10.00	2016	Amsoil Signature Series 0W-20 (Amsoil data)
4	78.2	4,182	10.70	2017	Mobil 1 Advanced Fuel Economy Full Synthetic SAE 0W-20 dexos1
5	57.8	5,884	10.30	2017	Pennzoil Platinum Full Synthetic with PurePlus™ Technology SAE 0W-20 dexos1
6	57.1	6,068	10.10	2015	Pennzoil Platinum Full Synthetic SAE 0W-20 dexos1 (PurePlus)
7	54.9	5,958	10.70	2014	Quaker State Synthetic API SN, ILSAC GF-5, SAE 0W-20 motor oil.
8	54.0	5,448	11.90	2015	Beck/Arnley Premium OE Fully Synthetic Motor Oil SAE 0W-20
9	53.2	5,721	11.50	2015	Valvoline Full Synthetic SYNPower SAE 0W-20 
10	53.0	5,006	13.20	2015	SuperS SuperSyn Full Synthetic SAE 0W-20
11	51.9	5,819	11.60	2017	Valvoline Full Synthetic SYNPower SAE 0W-20 dexos1
12	49.8	5,537	12.70	2015	Castrol Edge Full Synthetic SAE 0W-20 dexos1 (black bottle)
13	48.6	5,451	13.20	2014	Castrol Edge Synthetic Motor Oil API SN, ILSAC GF-5, SAE 0W-20 motor oil. (Gold bottle)
14	47.6	5,658	13.00	2015	STARFIRE SAE 0W-20 Full Synthetic dexos1
15	47.2	5,657	13.10	2014	Pronto Supreme API SN, ILSAC GF-5, SAE 0W-20 motor oil. (Full synthetic)
16	47.2	4,981	14.90	2014	Starfire Motor Oil API SN, ILSAC GF-5, SAE 0W-20 motor oil. (Full synthetic)
17	46.2	5,786	13.10	2015	ProLine Full Synthetic SAE 0W-20 dexos1
18	45.6	5,113	15.00	2014	i-Sint XL 4AM Synthetic
19	43.5	6,138	13.10	2017	STP SYN Full Synthetic SAE 0W-20 dexos1
20	43.1	5,723	14.20	2016	AMSOIL Synthetic OE SAE 0W-20 Motor Oil
21	41.8	5,814	14.40	2014	MAG1 API SN, ILSAC GF-5, SAE 0W-20 motor oil. (Full synthetic)
22	39.7	6,163	14.30	2014	Federated Motor Oil API SN, ILSAC GF-5, SAE 0W-20 motor oil. (Full synthetic)

5W-xx oils:

Code:
Rank	BOQI	DV-30   NOACK   Date    Oil

1	79.2	3,827	6.60	2013	Pennzoil Ultra™ 5W-30 API SN ILSAC GF-5
2	70.1	4,389	6.50	2013	Pennzoil API SN, ILSAC GF-5, SAE 5W-20 motor oil. (Yellow Bottle)
3	63.8	4,017	7.80	2013	Quaker State API SN, ILSAC GF-5, SAE 5W-20 motor oil. (Advanced Durability)
4	57.5	3,996	8.70	2016	Quaker State Ultimate Durability Full Synthetic SAE 5W-30 dexos1
5	54.3	4,184	8.80	2013	Quaker State Ultimate Durability™ 5W-30 API SN ILSAC GF-5
6	53.9	4,080	9.10	2014	Pennzoil Platinum Full Synthetic Motor Oil API SN, ILSAC GF-5, SAE 5W-30 motor oil. (PurePlus)
7	51.8	4,884	7.90	2014	AC Delco API SN, ILSAC GF-5, SAE 5W-30 motor oil. (Synthetic Blend)
8	51.8	4,154	9.30	2013	Pennzoil Platinum® 5W-30 API SN ILSAC GF-5
9	51.6	3,998	9.70	2013	Formula Shell Synthetic 5W-30 API SN ILSAC GF-5
10	50.4	4,271	9.30	2016	O'Reilly Full Synthetic SAE 5W-20 dexos1
11	50.3	3,937	10.10	2013	Mobil 1 5W-30 API SN ILSAC GF-5
12	47.3	4,544	9.30	2017	MILESYN SXR SAE 5W-20 Full Synthetic Engine Oil
13	46.9	4,180	10.20	2016	Meijer Full Synthetic SAE 5W-20
14	44.9	3,352	13.30	2013	Havoline Synthetic, API SN, ILSAC GF-5, SAE 5W-20 motor oil.
15	43.4	4,431	10.40	2013	Auto Extra  Full Synthetic 5W-30 API SN ILSAC GF-5
16	43.3	4,614	10.00	2015	LubriGold SAE 5W-30 Full Synthetic dexos1
17	42.5	4,358	10.80	2013	ENEOS Fully Synthetic 5W-30 API SN ILSAC GF-5
18	41.1	4,155	11.70	2016	Castrol Edge Full Synthetic SAE 5W-20 dexos1
19	41.0	5,744	8.50	2017	Navi Guard Ultra SAE 5W-20 Full Synthetic
20	40.9	4,941	9.90	2013	Schaeffer's Supreme 9000™ Full Synthetic Motor Oil 5W-30 
21	39.8	4,329	11.60	2013	Valvoline SYNPOWER™ 5W-30 API SN ILSAC GF-5
22	39.6	3,881	13.00	2013	Havoline Synthetic 5W-30 API SN ILSAC GF-5
23	39.4	4,924	10.30	2015	STARFIRE SAE 5W-20 Full Synthetic dexos1
24	39.2	4,512	11.30	2013	LUKOIL Full Synthetic Motor Oil 5W-30 API SN ILSAC GF-5
25	38.7	4,576	11.30	2013	Super Tech  Full Synthetic 5W-30 API SN ILSAC GF-5
26	38.7	3,860	13.40	2017	Chevron Havoline Pro DS SAE 5W-20 Full Synthetic Motor Oil
27	38.6	4,179	12.40	2013	FRAM Full Synthetic 5W-30 API SN ILSAC GF-5
28	38.6	4,892	10.60	2016	AutoQuest Full Synthetic SAE 5W-30 dexos1
29	38.3	5,019	10.40	2016	Royal Purple Synthetic Oil SAE 5W-20 High Performance Motor Oil
30	38.2	5,453	9.60	2013	LubriGold® Synthetic  5W-30 API SN, ILSAC GF-5, Dexos™
31	37.7	5,590	9.50	2017	Royal Purple Synthetic Oil SAE 5W-20 High Performance Motor Oil
32	37.2	5,599	9.60	2016	Race Pro Platinum Full Synthetic "SAE 5W20"
33	37.1	4,945	10.90	2013	Amsoil OE 5W-30 API SN ILSAC GF-5
34	36.7	5,090	10.70	2013	Kendall GT-1 Full Synthetic with Liquid Titanium 5W-30 API SN ILSAC GF-5
35	36.1	5,479	10.10	2014	Mobil 1 High Mileage Motor Oil SAE 5W-30, API SL
36	35.9	4,604	12.10	2013	Traveller Full Synthetic 5W-30 API SN ILSAC GF-5
37	35.8	5,126	10.90	2014	Valvoline MAX Life High Mileage, API SN, ILSAC GF-5, SAE 5W-30 motor oil.
38	35.0	4,612	12.40	2016	Preferred Choice Synthetic Blend SAE 5W-30 High Performance Motor Oil
39	34.7	4,611	12.50	2016	AutoZone Full Synthetic SAE 5W-20 dexos1
40	34.3	5,069	11.50	2016	AutoPride SAE 5W-30 All Season Motor Oil
41	33.3	5,411	11.10	2013	NAPA Synthetic Maximun Engine Protection 5W-30 API SN ILSAC GF-5
42	33.2	4,152	14.50	2014	National Motor Oil API SN, ILSAC GF-5, SAE 5W-30 motor oil.
43	33.0	5,562	10.90	2013	Royal Purple® Synthetic Oil 5W-30 API SN ILSAC GF-5
44	32.7	4,781	12.80	2017	Sheetz Premium Motor Oil SAE 5W-20
45	32.5	5,544	11.10	2013	Castrol Edge® 5W-30 API SN ILSAC GF-5
46	32.3	5,031	12.30	2016	Quantum X-5 Max-Blend Semi-Synthetic Motor Oil
47	32.1	4,156	15.00	2014	Marathon Motor Oil API SN, ILSAC GF-5, SAE 5W-30 motor oil.
48	32.1	5,832	10.70	2014	Valvoline NextGen API SN, ILSAC GF-5, SAE 5W-20 motor oil.
49	32.0	5,487	11.40	2015	Quaker State SAE 5W-30 Advanced Durability
50	31.9	5,177	12.10	2015	7-Eleven Motor Oil SAE 5W-30
51	31.7	5,436	11.60	2013	Mobil Super™ Synthetic 5W-30 API SN ILSAC GF-5
52	31.4	4,856	13.10	2017	Marathon SAE 5W-20 Performance Series Motor Oil
53	31.4	5,053	12.60	2017	StarFire SAE 5W-20
54	31.3	4,293	14.90	2013	Lucas® Synthetic 5W-30 API SN ILSAC GF-5
55	31.1	5,544	11.60	2017	O'Reilly SAE 5W-20
56	31.0	5,038	12.80	2017	CarQuest SAE 5W-20 Full Synthetic
57	30.9	5,782	11.20	2015	American XT Premium SAE 5W-30 High Mileage Motor Oil
58	30.8	5,553	11.70	2013	Proline® Full Synthetic Motor Oil 5W-30 API SN ILSAC GF-5
59	30.6	5,230	12.50	2017	Chevron Havoline SAE 5W-20 Motor Oil
60	30.6	5,595	11.70	2017	Kum & Go SAE 5W-30 Full Synthetic dexos1 Motor Oil
61	30.2	5,480	12.10	2016	Mobil Super Premium Motor Oil SAE 5W-20
62	30.1	5,828	11.40	2017	Zecol-Max Synthetic, Semi-Synthetic SAE 5W-20 Motor Oil
63	30.1	5,323	12.50	2017	AutoQuest by meijer SAE 5W-20 Conventional Motor Oil
64	30.0	5,643	11.80	2015	Zecol-Max Semi-Synthetic SAE 5W-30
65	29.7	5,426	12.40	2015	MAG 1 Motor Oil SAE 5W-20
66	29.6	5,815	11.60	2017	Castrol GTX SAE 5W-20 Motor Oil
67	29.5	5,432	12.50	2017	Preferred Choice Synthetic Blend SAE 5W-20 High Performance Motor Oil
68	29.5	5,264	12.90	2013	SuperS Multi Flo Synthetic  Blend API SN, ILSAC GF-5, SAE 5W-20 motor oil.
69	29.1	5,324	12.90	2016	Smart Living SAE 5W-30 Premium Motor Oil
70	29.0	5,229	13.20	2016	Certified Performance Engineered SAE 5W-30 Motor Oil
71	29.0	5,396	12.80	2016	Speedway SAE 5W-20 Motor Oil
72	28.9	5,400	12.80	2014	Warren Motor Oil API SN, ILSAC GF-5, SAE 5W-20 motor oil.
73	28.8	5,463	12.70	2016	Kum & Go Synthetic Blend SAE 5W-20 Motor Oil
74	28.7	5,523	12.60	2015	PROLINE SAE 5W-20 All Season Motor Oil
75	28.7	5,407	12.90	2014	Kangaroo Express Motor Oil SAE 5W-30, API SN, ILSAC GF-5
76	28.6	5,339	13.10	2016	Pennzoil Motor Oil SAE 5W-20
77	28.5	5,534	12.70	2016	Valvoline Max Life High Mileage Synthetic Blend SAE 5W-20, dexos1TM
78	28.1	5,237	13.60	2014	HESS Motor Oil SAE 5W-30, API SN, ILSAC GF-5
79	28.0	6,010	11.90	2016	RaceTrac RPMaximum SAE 5W-30 Performance Rated Motor Oil
80	27.9	4,777	15.00	2014	CAM2 SuperPRO Max Motor Oil SAE 5W-30, API SN, ILSAC GF-5
81	27.9	5,687	12.60	2014	Quaker State DEFY API SL SAE 5W-30 motor oil.
82	27.8	5,136	14.00	2013	Castrol GTX API SN, ILSAC GF-5, SAE 5W-20 motor oil.
83	27.7	6,214	11.60	2015	PENTO SUPER PERFORMANCE III SAE 5W-30 Motor Oil 
84	27.7	5,973	12.10	2016	PETROMERICA SAE 5W-30 Synthetic Blend Motor Oil
85	27.6	5,700	12.70	2016	Sinclair Supreme SAE 5W-30 Motor Oil
86	27.4	5,539	13.20	2014	Speedway API SN, ILSAC GF-5, SAE 5W-20 motor oil.
87	27.3	6,048	12.10	2016	Castrol GTX Motor Oil SAE 5W-20
88	27.1	5,761	12.80	2017	MidWest Guard SAE 5W-30 Synthetic Blend Motor Oil
89	27.0	5,562	13.30	2017	CITGO SUPERGARD SAE 5W-30 Synthetic Blend
90	27.0	5,615	13.20	2015	Chevron Havoline SAE 5W-20 Motor Oil
91	26.9	5,304	14.00	2016	LUKOIL SAE 5W-20 Synthetic Blend Motor Oil
92	26.7	5,582	13.40	2017	Signature Home SAE 5W-30 Premium Motor Oil
93	26.7	5,586	13.40	2017	Prime Guard SAE 5W-20 Synthetic Blend Motor Oil
94	26.7	5,950	12.60	2017	Chevron Supreme SAE 5W-20 Motor Oil
95	26.5	5,664	13.30	2013	Auto Exra API SN, ILSAC GF-5, SAE 5W-20 motor oil.
96	26.5	5,316	14.20	2013	CAM2 Super Pro MAX API SN, ILSAC GF-5, SAE 5W-20 motor oil.
97	26.4	5,482	13.80	2015	Wolf's Head SAE 5W-30 Motor Oil Super-Duty Semi-Synthetic
98	26.4	5,650	13.40	2016	CITGO SUPERGARD SAE 5W-20 Synthetic Blend
99	26.4	5,737	13.20	2015	DuraMAX Liquid Armor SAE 5W-30 Synthetic Blend
100	26.4	5,662	13.40	2013	Traveller Premium API SN, ILSAC GF-5, SAE 5W-20 motor oil.
101	26.3	5,471	13.90	2014	Super S Multi Flo High Mileage Motor  Oil API SN, ILSAC GF-5, SAE 5W-30
102	26.3	5,471	13.90	2014	Super S Multi Flo High Mileage Motor  Oil API SN, ILSAC GF-5, SAE 5W-30
103	26.2	5,332	14.30	2016	PROLINE SAE 5W-20 All Season Motor Oil
104	26.0	6,008	12.80	2015	Shell Rotella T6 Synthetic SAE 5W-40, API CJ-4, CI-4, CI-4 Plus, CI-4, CH-4, CG-4/SM
105	26.0	5,538	13.90	2013	Mobil 5000 API SN, ILSAC GF-5, SAE 5W-20 motor oil.
106	25.9	5,281	14.60	2013	Atlas Team Clear Blend API SN, ILSAC GF-5, SAE 5W-20 motor oil.
107	25.9	5,772	13.40	2014	NAPA High Mileage, API SN, ILSAC GF-5, SAE 10W-30 motor oil.
108	25.8	5,283	14.70	2013	Proline API SN, ILSAC GF-5, SAE 5W-20 motor oil.
109	25.7	5,284	14.70	2015	Quaker State Advanced Durability SAE 5W-30
110	25.7	5,646	13.80	2013	Sheetz Premium API SN, ILSAC GF-5, SAE 5W-20 motor oil.
111	25.7	5,860	13.30	2014	Service Pro  API SN, ILSAC GF-5, SAE 5W-20 motor oil.
112	25.6	6,154	12.70	2015	Safeway SAE 5W-30 Premium Motor Oil
113	25.6	5,790	13.50	2014	Ace Motor Oil, API SN, ILSAC GF-5, SAE 5W20 motor oil.
114	25.6	5,790	13.50	2014	Ace Motor Oil, API SN, ILSAC GF-5, SAE 5W20 motor oil.
115	25.4	5,668	13.90	2016	LMX SAE 5W-20 Premium Motor Oil
116	25.4	5,472	14.40	2015	Peak SAE 5W-30 Conventional Motor Oil
117	25.4	5,594	14.10	2014	Mobil Super High Mileage Motor Oil API SN, ILSAC GF-5, SAE 5W-30 motor oil.
118	25.2	6,049	13.10	2015	Star Fire SAE 5W-20 Synthetic Blend Motor Oil
119	25.0	5,875	13.60	2014	Pennzoil High Higher Mileage, API SN, SAE 5W-30 motor oil.
120	25.0	5,566	14.40	2017	Sunoco Ultra SAE 5W-20 Premium Motor Oil
121	24.9	6,028	13.30	2015	RK SAE 5W-30
122	24.9	5,624	14.30	2013	CAM2® SYNAVEX™  5W-30 API SN, ILSAC GF-5 (Full Synthetic)
123	24.7	5,360	15.10	2013	Formula Shell   API SN, ILSAC GF-5, SAE 5W-20 motor oil.
124	24.6	6,266	13.00	2015	Casey's General Store SAE 5W-30
125	24.5	5,590	14.60	2015	Essential Everyday SAE 5W-30
126	24.5	5,555	14.70	2013	Autozone API SN, ILSAC GF-5, SAE 5W-20 motor oil.
127	24.5	6,141	13.30	2014	Castrol GTX High Mileage Motor Oil API SN, ILSAC GF-5, SAE 5W-30 motor oil.
128	24.4	5,975	13.70	2014	RacePro Motor Oil API SN, ILSAC GF-5, SAE 5W-20 motor oil.
129	24.1	5,489	15.10	2014	O'Reilly High Mileage Motor Oil SAE 5W-30, API SN, ILSAC GF-5
130	24.0	6,208	13.40	2014	Duplex Motor Oil API SN, ILSAC GF-5, SAE 5W-30 motor oil.
131	24.0	5,595	14.90	2013	Advance Auto Parts API SN, ILSAC GF-5, SAE 5W-20 motor oil.
132	24.0	6,225	13.40	2017	Premier SAE 5W-30 Motor Oil
133	23.9	6,528	12.80	2017	Vantage 5W-30 SAE Synthetic Blend Oil
134	23.9	5,617	14.90	2013	O'Reilly API SN, ILSAC GF-5, SAE 5W-20 motor oil.
135	23.9	5,936	14.10	2014	Murphy USA Premium Motor Oil SAE 5W-30, API SN, ILSAC GF-5 
136	23.8	5,641	14.90	2015	ACCEL Motor Oil SAE 5W-30
137	23.8	5,764	14.60	2017	Ford Motorcraft SAE 5W-20 Synthetic Blend Motor Oil
138	23.8	5,766	14.60	2017	Phillips 66 Shield Choice SAE 5W-30 Synthetic Blend Motor Oil
139	23.7	5,746	14.70	2016	Valvoline Premium Conventional SAE 5W-20 Motor Oil
140	23.4	6,021	14.20	2013	Pronto Supreme  API SN, ILSAC GF-5, SAE 5W-20 motor oil.
141	23.3	6,164	13.90	2017	Navi Guard Elite SAE 5W-30 Synthetic Blend
142	23.3	6,082	14.10	2015	SuperTech Conventional SAE 5W-30
143	23.3	5,618	15.30	2013	Peak API SN, ILSAC GF-5, SAE 5W-20
144	23.2	5,790	14.90	2014	Advance Auto Parts API SN, ILSAC GF-5, SAE 5W-20 motor oil.
145	23.2	5,911	14.60	2014	Advance Auto Parts High Mileage, API SN, ILSAC GF-5, SAE 10W-30 motor oil.
146	23.1	6,356	13.60	2016	Circle K SAE 5W-30 Premium Motor Oil
147	23.1	5,692	15.20	2014	Valvoline API SN, ILSAC GF-5, SAE 5W-20 motor oil. (White Bottle)
148	23.0	5,828	14.90	2017	Phillips 66 Trop Artic SAE 5W-20 Synthetic Blend Motor Oil
149	23.0	5,720	15.20	2013	Federated Auto Parts  API SN, ILSAC GF-5, SAE 5W-20 motor oil.
150	22.9	6,055	14.40	2015	Valvoline SAE 5W-20 Premium Conventional Motor Oil
151	22.9	5,745	15.20	2013	Motorcraft API SN, ILSAC GF-5, SAE 5W-20 motor oil. (Synthetic Blend)
152	22.9	5,984	14.60	2014	Chevron Supreme API SN, ILSAC GF-5, SAE 5W-20 motor oil.
153	22.9	5,825	15.00	2014	SurgeGuardAPI SM, ILSAC GF-4, SAE 5W-20 motor oil.
154	22.8	5,955	14.70	2015	SynGard Synthetic Blend SAE 5W-30
155	22.7	6,034	14.60	2013	Wolf's Head API SN, ILSAC GF-5, SAE 5W-20 motor oil.
156	22.7	5,877	15.00	2015	STP Pro Formula 5W-30
157	22.7	6,174	14.30	2014	MAG1 Motor Oil API SN, ILSAC GF-5, SAE 5W-30 motor oil.
158	22.5	5,846	15.20	2013	CERTIFIED Performance Engineered,  API SN, ILSAC GF-5, SAE 5W-20 motor oil.
159	22.3	6,008	14.90	2015	Phillips 66 Trop Artic SAE 5W-30 Synthetic Blend Motor Oil
160	22.3	6,220	14.40	2013	RacePRO Semi Synthetic, API SN, ILSAC GF-5, SAE 5W-20 motor oil.
161	22.3	5,987	15.00	2013	Parts Master API SN, ILSAC GF-5, SAE 5W-20 motor oil.
162	22.2	5,854	15.40	2014	Delfin Ultimate API SM, ILSAC GF-4, SAE 5W-20 motor oil.
163	22.2	5,858	15.40	2014	Havoline Motor Oil with Deposit Shield SAE 5W-30, API SN, ILSAC GF-5
164	22.1	5,739	15.75	2013	76 Super Synthetic Blend, API SN, ILSAC GF-5, SAE 5W-20 motor oil.
165	22.1	5,960	15.20	2014	Brad Penn Synthetic Blend API SN, ILSAC GF-5, SAE 5W-20 motor oil.
166	22.1	6,292	14.40	2015	Mobil Special SAE 5W-30 Quality Motor Oil
167	21.9	6,373	14.30	2014	Mototech Motor Oil API SN, ILSAC GF-5, SAE 5W-30 motor oil.
168	21.9	6,004	15.20	2015	Ford Motorcraft SAE 5W-30 Synthetic Blend
169	21.6	6,165	15.00	2016	Phillips 66 Trop Artic SAE 5W-30 Synthetic Blend Motor Oil
170	21.5	6,124	15.20	2014	SuperTECH High Mileage, API SN, ILSAC GF-5, SAE 5W-30 motor oil.
171	21.4	6,199	15.10	2014	Kendall with Liquid Titanium API SN, ILSAC GF-5, SAE 5W-20 motor oil.
172	21.3	6,144	15.30	2015	Agip SUPER XL SAE 5W-30, API SN, ILSAC GF-5
173	21.2	6,334	14.90	2014	7-Eleven Motor Oil API SN, ILSAC GF-5, SAE 5W-30 motor oil
174	20.8	5,988	16.05	2014	PEAK High Mileage Motor Oil API SN, ILSAC GF-5, SAE 5W-30 motor oil.
175	20.7	6,262	15.40	2014	O'Reilly High Mileage API SN, ILSAC GF-5, SAE 5W-30 motor oil.
176	20.6	2,474	39.20	2017	MORGAS SAE 5W-20 Synthetic Blend (failed tests)
177	20.6	5,288	18.35	2013	Valvoline  NextGen API SN, ILSAC GF-5, SAE 5W-20 motor oil.
178	20.4	6,326	15.50	2014	MileMaster API SN, ILSAC GF-5, SAE 5W-20 motor oil.
179	20.3	6,227	15.80	2016	Service Pro Premium Lubricants SAE 5W-20 Synthetic Blend Motor Oil
180	20.2	6,335	15.65	2014	Evolve API SN/ILSAC GF-5, SAE 5W-30 motor oil.
181	19.9	6,355	15.80	2013	CITGO SUPERGARD Synthetic Blend,  API SN, ILSAC GF-5, SAE 5W-20 motor oil.
182	19.1	6,833	15.30	2017	SuperS Custom Plus SAE 5W-20 Synthetic Blend (failed tests)
183	11.7	3,197	53.40	2016	Super XXX Platinum 5W30 Premium Motor Oil (failed tests)
_________________________
1985 Toyota Corolla LE, 4A-LC engine, ~ 270,000 M
Toyota (TGMO) 0W-20 SN synthetic
Mobil 1 EP M1-103 filter, 90430-12031 drain gasket

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#4478587 - 08/03/17 09:21 PM Re: List of oils by base-oil-quality index: 0W-20 oils [Re: Gokhan]
FermeLaPorte Offline


Registered: 07/25/17
Posts: 472
Loc: Texas (south)
It's all about price for me.
_________________________
Always Mobil 1
2014 1.6L Nissan Versa Sedan, 5 spd, 5k OCI.
2011 3.5L Chevrolet Impala, Automatic, 5k OCI.

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#4478603 - 08/03/17 09:37 PM Re: List of oils by base-oil-quality index: 0W-20 oils [Re: Gokhan]
merconvvv Offline


Registered: 07/10/16
Posts: 682
Loc: il usa
Thanks for the post.
Maybe you can do one for 10w smile
_________________________
1988 Mazda RX7 na PP 10w30 Noack 4.7
1994 Chrysler Concorde 3.3
1999 Ford Expedition 4.6 QSUD 10W30 NOACK 5.0

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#4478626 - 08/03/17 09:59 PM Re: List of oils by base-oil-quality index: 0W-20 oils [Re: Gokhan]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18173
Loc: Dallas,Tx USA
Originally Posted By: Gokhan
The base oils of 0W-20 oils are usually superior


I've read this here and alot of other places,that 0W20 has the best base oil of all the viscosities.
_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 0W20



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#4478638 - 08/03/17 10:15 PM Re: List of oils by base-oil-quality index: 0W-20 oils [Re: Gokhan]
PimTac Offline


Registered: 03/04/17
Posts: 4315
Loc: Soviet State of Washington
Who came up with this BOQI index?
_________________________
2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter


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#4478659 - 08/03/17 11:13 PM Re: List of oils by base-oil-quality index: 0W-20 oils [Re: merconvvv]
Gokhan Online   content


Registered: 12/29/10
Posts: 3014
Loc: Los Angeles, California
Originally Posted By: merconvvv
Thanks for the post.
Maybe you can do one for 10w smile

Good question!

If you notice the trend, the base-oil quality (BOQI) decreases dramatically as x in xW-y increases. I would expect poor base-oil quality for most 10W-30 oils. The reason for that is that as x increases, oils can be easily formulated with lower API groups. Group I and Group II are sufficient for 10W-30. No Group II+, which is used in conventional 5W-30, is needed.

I estimated the scaling factor for DV-25 for calculating the BOQI for 10W-xx as 1,160,000. If you plug this in, you get:

BOQI = (1,160,000)/(DV-25)/(NOACK) (useful for 10W-xx oils)

2011 Chevron Supreme 10W-30 BOQI = 14.8 (very low)
2010 7-Eleven 10W-30 BOQI = 16.0 (very low)

However, you also get:

2015 Pennzoil (yellow bottle) 10W-30 BOQI = 65.0 (GTL-based)

The reason for this anomaly is that circa 2013 - 2015, they actually used GTL in Pennzoil Yellow Bottle. BOQI around 15 seems to be typical for conventional 10W-30, which seems to be made of Group I or low-quality Group II.

Stay away from 10W-30. It's a thing of the past. You might be able to run into a quality 10W-30 formulation, especially with a brand-name full synthetic, but you will most likely end up with an inferior Group I/II oil.
_________________________
1985 Toyota Corolla LE, 4A-LC engine, ~ 270,000 M
Toyota (TGMO) 0W-20 SN synthetic
Mobil 1 EP M1-103 filter, 90430-12031 drain gasket

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#4478661 - 08/03/17 11:23 PM Re: List of oils by base-oil-quality index: 0W-20 oils [Re: Gokhan]
TheKracken Offline


Registered: 04/18/17
Posts: 515
Loc: Fort Worth TX
Do 5w20's have great base oils as well? I will be running PUP 5w20 in everything here soon.
_________________________
2011 Prius 96k miles RLI 5w20
97 Toy T100 4x4: amsoil 0w20 242k Miles
04 Toy Sienna awd: Pennzoil 0w20 281k Miles

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#4478664 - 08/03/17 11:29 PM Re: List of oils by base-oil-quality index: 0W-20 oils [Re: Gokhan]
xtell Offline


Registered: 12/13/06
Posts: 520
Loc: ohio
Excellent presentation. I may have to re-assess my future oil selections.

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#4478665 - 08/03/17 11:31 PM Re: List of oils by base-oil-quality index: 0W-20 oils [Re: TheKracken]
Gokhan Online   content


Registered: 12/29/10
Posts: 3014
Loc: Los Angeles, California
Originally Posted By: TheKracken
Do 5w20's have great base oils as well? I will be running PUP 5w20 in everything here soon.

5W-20s are listed in the second table in the original post. M1 AFE 0W-20 has the best base oil among tested xW-20 oils. It's similar to Amsoil Signature Series 0W-20 in base-oil quality. So, if you want to go with the best base-oil quality, you should go with M1 AFE 0W-20 or perhaps M1 EP 0W-20, not the PP/PUP and not a 5W-20.

This said, I use TGMO 0W-20 SN. However, there is no test data on it.
_________________________
1985 Toyota Corolla LE, 4A-LC engine, ~ 270,000 M
Toyota (TGMO) 0W-20 SN synthetic
Mobil 1 EP M1-103 filter, 90430-12031 drain gasket

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#4478678 - 08/04/17 12:37 AM Re: List of oils by base-oil-quality index: 0W-20 oils [Re: Gokhan]
TheKracken Offline


Registered: 04/18/17
Posts: 515
Loc: Fort Worth TX
Originally Posted By: Gokhan
Originally Posted By: TheKracken
Do 5w20's have great base oils as well? I will be running PUP 5w20 in everything here soon.

5W-20s are listed in the second table in the original post. M1 AFE 0W-20 has the best base oil among tested xW-20 oils. It's similar to Amsoil Signature Series 0W-20 in base-oil quality. So, if you want to go with the best base-oil quality, you should go with M1 AFE 0W-20 or perhaps M1 EP 0W-20, not the PP/PUP and not a 5W-20.

This said, I use TGMO 0W-20 SN. However, there is no test data on it.


I have 12 jugs of the 5w20 PUP, I might have to consider sending them back....though base oil isnt everything, it is additives as well. Like you, I am a thin oil guy.
_________________________
2011 Prius 96k miles RLI 5w20
97 Toy T100 4x4: amsoil 0w20 242k Miles
04 Toy Sienna awd: Pennzoil 0w20 281k Miles

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#4478683 - 08/04/17 01:12 AM Re: List of oils by base-oil-quality index: 0W-20 oils [Re: Gokhan]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: Gokhan

Stay away from 10W-30. It's a thing of the past. You might be able to run into a quality 10W-30 formulation, especially with a brand-name full synthetic, but you will most likely end up with an inferior Group I/II oil.


This is Hearsay.
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4478684 - 08/04/17 01:13 AM Re: List of oils by base-oil-quality index: 0W-20 oils [Re: TheKracken]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: TheKracken

I have 12 jugs of the 5w20 PUP, I might have to consider sending them back....



Pffffft. Pay no attention to that man behind the curtain.
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4478686 - 08/04/17 01:14 AM Re: List of oils by base-oil-quality index: 0W-20 oils [Re: TheKracken]
rubberchicken Offline


Registered: 07/07/08
Posts: 399
Loc: Maryland USA
You said " (2) 2014 Mobil 1 AFE 0W-20 is the now all-time BOQI champion, easily beating the old, discontinued Pennzoil Ultra. The current formulation is still excellent. However, the base-oil quality of M1 AFE 0W-20 seems to be going down every year, meaning they are putting less and less PAO in it every year.".

I just bought a batch of PUP 0w-20 from Amazon, although yet to be delivered. On the Pennz website it is still listed as an active product. What product was discontinued ?

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#4478694 - 08/04/17 02:20 AM Re: List of oils by base-oil-quality index: 0W-20 oils [Re: Gokhan]
Shannow Online   content


Registered: 12/12/02
Posts: 39879
Loc: 'Stralia
As if the original concept wasn't baseless enough, but WOW, to extend it's "findings" to 0W and 10W, therefore "verifying" that 0W20s use better basestocks...priceless.

I still haven't seen you divide by colour, as clearly the purity of basestocks has a colour element to it as well.

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#4478701 - 08/04/17 03:11 AM Re: List of oils by base-oil-quality index: 0W-20 oils [Re: rubberchicken]
NoNameJoe Offline


Registered: 06/03/15
Posts: 414
Loc: New York
Originally Posted By: rubberchicken
You said " (2) 2014 Mobil 1 AFE 0W-20 is the now all-time BOQI champion, easily beating the old, discontinued Pennzoil Ultra. The current formulation is still excellent. However, the base-oil quality of M1 AFE 0W-20 seems to be going down every year, meaning they are putting less and less PAO in it every year.".

I just bought a batch of PUP 0w-20 from Amazon, although yet to be delivered. On the Pennz website it is still listed as an active product. What product was discontinued ?

LOL! Don't cancel your order! The discontinued one is "Pennzoil Ultra", it's not what you're referring to which is "Pennzoil Ultra Platinum". Pennzoil Ultra is like the ultra variant of standard Pennzoil and Pennzoil Ultra Platinum is like the ultra variant of Pennzoil Platinum. PuP is still in production.

I believe the discontinued Pennzoil Ultra differed from PuP at least in that it wasn't Pureplus Technology like PuP is.

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