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In short... thin is in... top 10 ranked oils are 30 grades...
So, as you can see, oil viscosity plays no particular role in an oil’s wear protection capability. As mentioned above, an oil’s wear protection capability is determined by its base oil and its additive package “as a whole”, with the primary emphasis on the additive package, which contains the extreme pressure components.
Wear protection reference categories are:
• Over 105,000 psi = INCREDIBLE wear protection
• 90,000 to 105,000 psi = OUTSTANDING wear protection
• 75,000 to 90,000 psi = GOOD wear protection
• 60,000 to 75,000 psi = MODEST wear protection
• Below 60,000 psi = UNDESIRABLE wear protection
All the oils were tested at a representative operational temperature of 230*F.
The HIGHER the psi value, the BETTER the Wear Protection.
1. 5W30 Pennzoil Ultra, API SM synthetic = 115,612 psi
I have not been able to find this oil with the latest API SN certification. The bottle says, “No leading synthetic oil provides better wear protection”. For once, a product’s hype turns out to be true. And this oil provides MORE THAN TWICE as much wear protection as the lowest ranked oil on this list.
Chrysler is so impressed with Pennzoil Ultra, that they selected the 0W40 version of it as the only Factory Fill oil for their latest 8.4L, 640 HP, V-10, 200+ mph, Dodge SRT Viper.
zinc = 806 ppm
phosphorus = 812 ppm
moly = 66 ppm
calcium = 3,011 ppm
TBN = 10.3
2. “Oil Extreme concentrate” added to 5W30 Pennzoil Ultra, API SM synthetic = 111,570 psi
This oil on its own WITHOUT the “Oil Extreme concentrate” added to it, has a wear protection capability of 115,612 psi, and is ranked 1st. But, with 2.0 OZ of concentrate added per qt, which is the amount intended for racing, its wear protection capability “WENT DOWN 3.5%”.
zinc = TBD
phosphorus = TBD.
moly = TBD
calcium = TBD
TBN = TBD
3. “Oil Extreme concentrate” added to 10W30 Brad Penn, Penn Grade 1 semi-synthetic = 111,061psi
This oil on its own WITHOUT the “Oil Extreme concentrate” added to it, has a wear protection capability of only 71,206 psi, and is ranked 88th. But, with 2.0 OZ of concentrate added per qt, which is the amount intended for racing, its wear protection capability “WENT UP A BREATH TAKING 56%”.
zinc = TBD
phosphorus = TBD.
moly = TBD
calcium = TBD
TBN = TBD
4. 5W30 Oil Extreme, API SM synthetic (per the Oil Company, even though synthetic wording is not shown on the label) = 110,286 psi
The Company claims this oil contains their proprietary formula of calcium petroleum sulfontate EP (Extreme Pressure) technology that is NOT found in any other motor oil. They also claim that it will provide 5 to 7 more HP, 7 to 10% better fuel mileage, cut engine wear in half, and will extend drain intervals two or three times safely. This oil is endorsed and promoted by Tech Author David Vizard. And he was so impressed by this oil’s performance that he also became a share holder in the Company. The results from the “Dynamic Wear Testing Under Load” performed here, fully supports their claim regarding wear protection. So, their hype about that, turned out to be absolutely true. And since this oil beat every high zinc oil I’ve ever tested, it also proved another one of their claims, that using zinc as the primary anti-wear component, is outdated technology.
zinc = 765 ppm
phosphorus = 624 ppm
moly = 52 ppm
calcium = 7,652 ppm
TBN = 23.2
5. 10W30 Lucas Racing Only synthetic = 106,505 psi
zinc = 2642 ppm
phosphorus = 3489 ppm
moly = 1764 ppm
calcium = 2,929 ppm
TBN = 9.0
NOTE: This oil is suitable for short term racing use only, and is not suitable for street use.
6. 5W30 Mobil 1, API SN synthetic = 105,875 psi
zinc = 801 ppm
phosphorus = 842 ppm
moly = 112 ppm
calcium = 799 ppm
TBN = 7.5
7. “Oil Extreme concentrate” added to 10W30 Lucas Hot Rod & Classic Hi-Performance Oil conventional = 105,758 psi
This oil on its own WITHOUT the “Oil Extreme concentrate” added to it, has a wear protection capability of only 62,538 psi, and is ranked 104th. But, with 2.0 OZ of concentrate added per qt, which is the amount intended for racing, its wear protection capability “WENT UP A MIND BLOWING 69%”.
zinc = TBD
phosphorus = TBD.
moly = TBD
calcium = TBD
TBN = TBD
8. 0W30 Amsoil Signature Series 25,000 miles, API SN synthetic = 105,008 psi
zinc = 824 ppm
phosphorus = 960 ppm
moly = 161 ppm
calcium = 3,354 ppm
TBN = 11.4
9. 10W30 Valvoline NSL (Not Street Legal) Conventional Racing Oil = 103,846 psi
zinc = 1669 ppm
phosphorus = 1518 ppm
moly = 784 ppm
calcium = 1,607 ppm
TBN = 4.4
NOTE: This oil is suitable for short term racing use only, and is not suitable for street use.
10. 5W50 Motorcraft, API SN synthetic = 103,517 psi
zinc = 606 ppm
phosphorus = 742 ppm
moly = 28 ppm
calcium = 1,710 ppm
TBN = 6.7
11. 10W30 Valvoline VR1 Conventional Racing Oil (silver bottle) = 103,505 psi
zinc = 1472 ppm
phosphorus = 1544 ppm
moly = 3 ppm
calcium = 2,707 ppm
TBN = 7.6
12. 5W30 Amsoil Series 3000 Heavy Duty Diesel Oil synthetic, API CI-4 PLUS, CF, SL, ACEA A3/B3, E2, E3, E5, E7 = 102,642 psi
This is BY FAR, the highest ranked Diesel oil I have ever tested. This oil is Engineered for Diesel engines not equipped with Diesel particulate filters (DPF). Amsoil says this oil delivers better wear protection than other popular Diesel oils. And in this case, their hype is absolutely true. They also say it effectively reduces fuel consumption, with its advanced fuel efficient formula. This oil costs $11.15 per quart in the 2013 Amsoil Factory Direct Retail Catalog, which is 10% more than Amsoil’s 5W40 Premium Synthetic Diesel Oil. So, in this case, you pay only 10% more for the Amsoil Series 3000 Heavy Duty Diesel Oil, but you get a whopping 33% more wear protection than you get with the Amsoil’s 5W40 Premium Synthetic Diesel Oil. Money very well spent, if you run a Diesel oil intended for engines not equipped with Diesel particulate filters. The next highest ranked Diesel oil only ranks a very unimpressive 54th out of the 118 oils I’ve tested so far. So, this 5W30 Amsoil Series 3000 Heavy Duty Diesel Oil is in a class of its own, among all the Diesel oils I have tested.
zinc = TBD
phos = TBD
moly = TBD
13. “Oil Extreme concentrate” added to 5W30 Mobil 1, API SN synthetic = 102,059 psi
This oil on its own WITHOUT the “Oil Extreme concentrate” added to it, has a wear protection capability of 105,875 psi, and is ranked 6th. But, with 2.0 OZ of concentrate added per qt, which is the amount intended for racing, its wear protection capability “WENT DOWN 3.6%”.
zinc = TBD
phosphorus = TBD.
moly = TBD
calcium = TBD
TBN = TBD
14. 10W30 Valvoline VR1 Synthetic Racing Oil, API SL (black bottle) = 101,139 psi
zinc = 1180 ppm
phosphorus = 1112 ppm
moly = 162 ppm
calcium = 2,664 ppm
TBN = 7.4
15. “Oil Extreme concentrate” added to 5W30 Pennzoil, API SN conventional, yellow bottle = 100,252 psi
This oil on its own WITHOUT the “Oil Extreme concentrate” added to it, has a wear protection capability of only 76,989 psi, and is ranked 69th. But, with 1.5 OZ of concentrate added per qt, which is the bottle’s instruction for street driven vehicles, its wear protection capability “WENT UP A WHOPPING 30%”.
zinc = 970 ppm
phosphorus = 749 ppm, this value is 91 ppm lower than the basic oil because the concentrate has less phosphorus in it, which diluted the overall ppm count of the mixture.
moly = 285 ppm
calcium = 4,443 ppm
TBN = 18.8
16. 5W30 Chevron Supreme, API SN conventional = 100,011 psi
This oil only cost $4.29 per quart at an Auto Parts Store when I bought it.
zinc = 1018 ppm
phos = 728 ppm
moly = 161 ppm
17. 5W20 Castrol Edge with Titanium, API SN synthetic = 99,983 psi
zinc = 1042 ppm
phos = 857 ppm
moly = 100 ppm
titanium = 49 ppm
18. 5W30 Pennzoil Platinum, API SN synthetic = 99,949 psi
zinc = TBD
phos = TBD
moly = TBD
19. “Oil Extreme concentrate” added to 5W30 Pennzoil, API SN conventional, yellow bottle = 99,529 psi
This oil on its own WITHOUT the “Oil Extreme concentrate” added to it, has a wear protection capability of only 76,989 psi, and is ranked 69th. But, with 2.0 OZ of concentrate added per qt, which is the amount intended for racing, its wear protection capability “WENT UP 29%”.
zinc = TBD
phos = TBD
moly = TBD
20. “Oil Extreme concentrate” added to 5W30 Oil Extreme Motor Oil, API SM synthetic = 98,396 psi
This oil on its own WITHOUT the “Oil Extreme concentrate” added to it, has a wear protection capability of 110,286 psi, and is ranked 4th. But, with 2.0 OZ of concentrate added per qt, which is the amount intended for racing, its wear protection capability “WENT DOWN 11%”.
zinc = TBD
phos = TBD.
moly = TBD
21. “Oil Extreme concentrate” added to 5W30 Pennzoil, API SN conventional, yellow bottle = 97,651 psi
This oil on its own WITHOUT the “Oil Extreme concentrate” added to it, has a wear protection capability of only 76,989 psi, and is ranked 69th. But, with 3.0 OZ of concentrate added per qt, its wear protection capability “WENT UP 27%”.
zinc = TBD
phos = TBD
moly = TBD
22. 10W30 Amsoil Dominator Racing Oil synthetic = 97,118 psi
zinc = 1613 ppm
phos = 1394 ppm
moly = 0 ppm
23. “Oil Extreme concentrate” added to 5W30 Pennzoil, API SN conventional, yellow bottle = 96,739 psi
This oil on its own WITHOUT the “Oil Extreme concentrate” added to it, has a wear protection capability of only 76,989 psi, and is ranked 69th. But, with 4.0 OZ of concentrate added per qt, its wear protection capability “WENT UP 26%”.
zinc = TBD
phos = TBD
moly = TBD
24. 20W50 Castrol GTX, API SN conventional = 96,514 psi
zinc = 610 ppm
phos = 754 ppm
moly = 94 ppm
25. 30 wt Red Line Race Oil synthetic = 96,470 psi
zinc = 2207 ppm
phos = 2052 ppm
moly = 1235 ppm
NOTE: This oil is suitable for short term racing use only, and is not suitable for street use.
26. 0W20 Mobil 1 Advanced Fuel Economy, API SN synthetic = 96,364 psi
zinc = 742 ppm
phos = 677 ppm
moly = 81 ppm
27. 5W30 Quaker State Ultimate Durability, API SN synthetic = 95,920 psi
zinc = 877 ppm
phos = 921 ppm
moly = 72 ppm
28. 5W30 Castrol Edge with Titanium, API SN synthetic = 95,717 psi
zinc = 818 ppm
phos = 883 ppm
moly = 90 ppm
titanium = 44 ppm
29. 10W30 Joe Gibbs XP3 NASCAR Racing Oil synthetic = 95,543 psi
zinc = 743 ppm
phos = 802 ppm
moly = 1125 ppm
NOTE: This oil is suitable for short term racing use only, and is not suitable for street use.
30. 5W20 Castrol GTX, API SN conventional = 95,543 psi
zinc = TBD
phos = TBD
moly = TBD
NOTE: Oil numbers 29 and 30 were tested weeks apart, but due to the similarities in their wear scar sizes, their averages ended up the same.
31. 5W30 Castrol GTX ,API SN conventional = 95,392 psi
zinc = 830 ppm
phos = 791 ppm
moly = 1 ppm
32. 10W30 Amsoil Z-Rod Oil synthetic = 95,360 psi
zinc = 1431 ppm
phos = 1441 ppm
moly = 52 ppm
33. 5W30 Havoline, API SN conventional = 95,098 psi
zinc = TBD
phos = TBD
moly = TBD
34. 5W30 Valvoline SynPower, API SN synthetic = 94,942 psi
zinc = 969 ppm
phos = 761 ppm
moly = 0 ppm
35. “Oil Extreme concentrate” added to 5W30 Chevron Supreme, API SN conventional = 94,864 psi
This oil on its own WITHOUT the “Oil Extreme concentrate” added to it, has a wear protection capability of 100,011 psi, and is ranked 16thth. But, with 2.0 OZ of concentrate added per qt, which is the amount intended for racing, its wear protection capability “WENT DOWN 5.1%”.
zinc = TBD
phosphorus = TBD.
moly = TBD
36. 5W30 Valvoline Premium Conventional, API SN = 94,744 psi
zinc = TBD
phos = TBD
moly = TBD
37. 5W20 Mobil 1, API SN synthetic = 94,663 psi
zinc = 764 ppm
phos = 698 ppm
moly = 76 ppm
38. 5W20 Valvoline SynPower, API SN synthetic = 94,460 psi
zinc = 1045 ppm
phos = 742 ppm
moly = 0 ppm
39. 5W30 Lucas, API SN conventional = 92,073 psi
zinc = 992 ppm
phos = 760 ppm
moly = 0 ppm
40. 5W30 O’Reilly (house brand), API SN conventional = 91,433 psi
This oil only cost $3.99 per quart at an Auto Parts Store when I bought it.
zinc = 863 ppm
phos = 816 ppm
moly = 0 ppm
41. 5W30 Maxima RS530 Synthetic Racing Oil = 91,162 psi
zinc = 2162 ppm
phos = 2294 ppm
moly = 181 ppm
42. 5W30 Red Line, API SN synthetic = 91,028 psi
zinc = TBD
phos = TBD
moly = TBD
43. 5W20 Royal Purple API SN synthetic = 90,434 psi
zinc = 964 ppm
phos = 892 ppm
moly = 0 ppm
44. 10W30 Quaker State Defy, API SL semi-synthetic = 90,226 psi
zinc = 1221 ppm
phos = 955 ppm
moly = 99 ppm
45. 10W60 Castrol TWS Motorsport, API SJ conventional = 90,163 psi
This oil is manufactured in Europe and is sold in the US for BMW models M3, M5, M6, Z4M, and Z8.
zinc = TBD
phos = TBD
moly = TBD
46. 5W20 Valvoline Premium Conventional, API SN = 90,144 psi
zinc = TBD
phos = TBD
moly = TBD
47. “Oil Extreme concentrate” added to 5W30 Castrol GTX, API SN conventional = 89,659 psi
This oil on its own WITHOUT the “Oil Extreme concentrate” added to it, has a wear protection capability of 95,392 psi, and is ranked 31st. But, with 2.0 OZ of concentrate added per qt, which is the amount intended for racing, its wear protection capability “WENT DOWN 6%”.
zinc = TBD
phosphorus = TBD.
moly = TBD
48. 5W30 Havoline, API SN synthetic = 89,406 psi
zinc = TBD
phos = TBD
moly = TBD
49. 30 wt Castrol Heavy Duty, API SM conventional = 88,089 psi
zinc = 907 ppm
phos = 829 ppm
moly = 56 ppm
50. 20W50 LAT Synthetic Racing Oil, API SM = 87,930 psi
zinc = TBD
phos = TBD
moly = TBD
51. 5W30 Valvoline Nextgen 50% Recycled Oil, API SN conventional = 87,563 psi
zinc = 947 ppm
phos = 778 ppm
moly = 0 ppm
52. 10W30 Joe Gibbs HR4 Hotrod Oil synthetic = 86,270 psi
zinc = 1247 ppm
phos = 1137 ppm
moly = 24 ppm
53. 5W20 Pennzoil Ultra, API SM synthetic = 86,034 psi
I have not been able to find this oil with the latest API SN certification.
zinc = TBD
phos = TBD
moly = TBD
54. 15W40 RED LINE Diesel Oil synthetic, API CJ-4/CI-4 PLUS/CI-4/CF/CH-4/CF-4/SM/SL/SH/EO-O = 85,663 psi
zinc = 1615 ppm
phos = 1551 ppm
moly = 173 ppm
55. 5W30 Castrol Edge w/Syntec, API SN (formerly Castrol Syntec) black bottle, synthetic = 85,179 psi
zinc = TBD
phos = TBD
moly = TBD
56. 5W30 Royal Purple API SN synthetic = 84,009 psi
zinc = 942 ppm
phos = 817 ppm
moly = 0 ppm
57. 20W50 Royal Purple API SN synthetic = 83,487 psi
zinc = 588 ppm
phos = 697 ppm
moly = 0 ppm
58. 20W50 Kendall GT-1 High Performance with liquid titanium, API SN conventional = 83,365 psi
zinc = 991 ppm
phos = 1253 ppm
moly = 57 ppm
titanium = 84 ppm
59. 5W30 Mobil 1 Extended Performance 15,000 mile, API SN synthetic = 83,263 psi
zinc = 890 ppm
phos = 819 ppm
moly = 104 ppm
60. 0W20 Castrol Edge with Titanium, API SN synthetic = 82,867 psi
zinc = TBD
phos = TBD
moly = TBD
61. 5W30 LAT Synthetic Racing Oil, API SM = 81,800 psi
zinc = 1784 ppm
phos = 1539 ppm
moly = 598 ppm
62. “Oil Extreme concentrate” added to 5W30 Royal Purple XPR (extreme performance racing oil) synthetic = 81,723 psi
This oil on its own WITHOUT the “Oil Extreme concentrate” added to it, has a wear protection capability of only 74,860 psi, and is ranked 75th. But, with 2.0 OZ of concentrate added per qt, which is the amount intended for racing, its wear protection capability “WENT UP 9%”.
zinc = TBD
phos = TBD.
moly = TBD
63. 5W30 Peak, API SN synthetic = 80,716 psi
zinc = TBD
phos = TBD
moly = TBD
64. 5W30 Edelbrock “Cat-Safe”, API SM synthetic = 78,609 psi
This oil is made for Edelbrock by Torco
zinc = 924 ppm
phos = 659 ppm
moly = 28 ppm
65. 30wt Amsoil Break-In Oil conventional = 78,192 psi
zinc = 2051 ppm
phos = 1917 ppm
moly = 0 ppm
66. 20W50 Resolute Racing Oil, API SN conventional = 77,554 psi
zinc = TBD
phos = TBD
moly = TBD
This oil cost only $2.49 per quart when bought for this test. It is a Regional Oil from the Mid-Western U.S. farm country.
67. 5W40 Amsoil Premium Diesel Oil synthetic, API CJ-4, CI-4 PLUS, CF, SN, SM, ACEA E7, E9 = 77,207 psi
zinc = TBD
phos = TBD
moly = TBD
68. 15W40 ROYAL PURPLE Diesel Oil synthetic, API CJ-4 /SM, CI-4 PLUS, CH-4, CI-4 = 76,997 psi
zinc = TBD
phos = TBD
moly = TBD
69. 5W30 Pennzoil, API SN yellow bottle, conventional = 76,989 psi
zinc = 839 ppm
phos = 840 ppm
moly = 267 ppm
70. 10W40 Chevron Supreme, API SN conventional = 76,806 psi
zinc = TBD
phos = TBD
moly = TBD
71. 5W30 Lucas API SM synthetic = 76,584 psi
zinc = 1134 ppm
phos = 666 ppm
moly = 0 ppm
72. 5W30 GM’s AC Delco dexos 1 API SN semi-synthetic = 76,501 psi
zinc = 878 ppm
phos = 758 ppm
moly = 72 ppm
73. 5W50 Castrol Edge with Syntec API SN, synthetic, formerly Castrol Syntec, black bottle = 75,409 psi
zinc = 1252 ppm
phos = 1197 ppm
moly = 71 ppm
74. “Oil Extreme concentrate” added to 10W30 Comp Cams Muscle Car & Street Rod Oil semi-synthetic = 74,874 psi
This oil on its own WITHOUT the “Oil Extreme concentrate” added to it, has a wear protection capability of only 60,413 psi, and is ranked 106th. But, with 2.0 OZ of concentrate added per qt, which is the amount intended for racing, its wear protection capability “WENT UP AN IMPRESSIVE 24%”.
zinc = TBD
phosphorus = TBD.
moly = TBD
75. 5W30 Royal Purple XPR (Extreme Performance Racing) synthetic = 74,860 psi
zinc = 1421 ppm
phos = 1338 ppm
moly = 204 ppm
76. 15W40 Cenpeco (Central Petroleum Company) S-3 Diesel Oil, conventional, API CI-4, CH-4, CG-4, CF, CE, CD, SL, SJ, SH = 74,593 psi
zinc = TBD
phos = TBD
moly = TBD
77. 5W40 MOBIL 1 TURBO DIESEL TRUCK synthetic, API CJ-4, CI-4 Plus, CI-4, CH-4 and ACEA E7 = 74,312 psi
zinc = 1211 ppm
phos = 1168 ppm
moly = 2 ppm
78. 0W50 Mobil 1 Racing Oil = 73,811 psi
zinc = 1676 ppm
phos = 1637 ppm
moly = 1263 ppm
79. 5W30 Peak, API SN conventional = 73,690 psi
zinc = TBD
phos = TBD
moly = TBD
80. 15W40 CHEVRON DELO 400LE Diesel Oil, conventional, API CJ-4, CI-4 Plus, CH-4, CF-4,CF/SM, = 73,520 psi
zinc = 1519 ppm
phos = 1139 ppm
moly = 80 ppm
81. 15W40 MOBIL DELVAC 1300 SUPER Diesel Oil conventional, API CJ-4, CI-4 Plus, CI-4, CH-4/SM, SL = 73,300 psi
zinc = 1297 ppm
phos = 1944 ppm
moly = 46 ppm
82. 15W40 Farm Rated Heavy Duty Performance Diesel Oil conventional CI-4, CH-4, CG-4, CF/SL, SJ = 73,176 psi
zinc = 1325ppm
phos = 1234 ppm
moly = 2 ppm
83. 15W40 “NEW” SHELL ROTELLA T Diesel Oil conventional, API CJ-4, CI-4 Plus, CH-4, CF-4,CF/SM = 72,022 psi
zinc = 1454 ppm
phos = 1062 ppm
moly = 0 ppm
84. Brad Penn, Penn Grade 1 Nitro 70 Racing Oil semi-synthetic = 72,003 psi
zinc = TBD
phos = TBD
moly = TBD
85. 0W30 Mobil 1 Racing Oil = 71,923 psi
zinc = 1693 ppm
phos = 1667 ppm
moly = 1326 ppm
86. 0W30 Brad Penn, Penn Grade 1 semi-synthetic = 71,377 psi
zinc = 1621 ppm
phos = 1437 ppm
moly = 0 ppm
87. 15W40 “OLD” SHELL ROTELLA T Diesel Oil conventional, API CI-4 PLUS, CI-4, CH-4,CG-4,CF-4,CF,SL, SJ, SH = 71,214 psi
zinc = 1171 ppm
phos = 1186 ppm
moly = 0 ppm
Yes it’s true, the old Rotella actually has LESS zinc than the new Rotella.
88. 10W30 Brad Penn, Penn Grade 1 semi-synthetic = 71,206 psi
zinc = 1557 ppm
phos = 1651 ppm
moly = 3 ppm
89. 15W40 VALVOLINE PREMIUM BLUE HEAVY DUTY DIESEL Oil conventional, API CJ-4, CI-4 Plus, CI-4, CH-4, CG-4, CF-4, CF/SM = 70,869 psi
zinc = TBD
phos = TBD
moly = TBD
90. 15W50 Mobil 1, API SN synthetic = 70,235 psi
zinc = 1,133 ppm
phos = 1,168 ppm
moly = 83 ppm
91. 10W40 Resolute All Season Motor Oil, API SN conventional = 69,709 psi
zinc = TBD
phos = TBD
moly = TBD
This oil cost $2.49 per quart when bought for this test. It is a Regional Oil from the Mid-Western U.S. farm country.
92. 5W40 CHEVRON DELO 400LE Diesel Oil synthetic, API CJ-4, CI-4 Plus, CI-4, SL, SM = 69,631 psi
zinc = TBD
phos = TBD
moly = TBD
93. 30wt Edelbrock Break-In Oil conventional = 69,160 psi
zinc = 1545 ppm
phos = 1465 ppm
moly = 4 ppm
94. 5W30 Motorcraft, API SN synthetic = 68,782 psi
zinc = 796 ppm
phos = 830 ppm
moly = 75 ppm
95. 10W40 Edelbrock synthetic = 68,603 psi
zinc = 1193 ppm
phos = 1146 ppm
moly = 121 ppm
This oil is manufactured for Edelbrock by Torco.
96. 5W40 SHELL ROTELLA T6 Diesel Oil synthetic, API CJ-4, CI-4 Plus, CI-4, CH-4, SM, SL = 67,804 psi
zinc = TBD
phos = TBD
moly = TBD
97. 15W40 LUCAS MAGNUM Diesel Oil, conventional, API CI-4,CH-4, CG-4, CF-4, CF/SL = 66,476 psi
zinc = 1441 ppm
phos = 1234 ppm
moly = 76 ppm
98. 15W40 CASTROL GTX DIESEL Oil conventional, API CJ-4, CI-4 Plus, CI-4, CH-4, CG-4, CF-4/SN = 66,323 psi
zinc = TBD
phos = TBD
moly = TBD
99. 10W30 Royal Purple HPS (High Performance Street) synthetic = 66,211 psi
zinc = 1774 ppm
phos = 1347 ppm
moly = 189 ppm
100. 10W40 Valvoline 4 Stroke Motorcycle Oil, API SJ conventional = 65,553 psi
zinc = 1154 ppm
phos = 1075 ppm
moly = 0 ppm
101. 5W30 Klotz Estorlin Racing Oil, API SL synthetic = 64,175 psi
zinc = 1765 ppm
phos = 2468 ppm
moly = 339 ppm
102. “ZDDPlus” added to Royal Purple 20W50, API SN, synthetic = 63,595 psi
zinc = 2436 ppm (up 1848 ppm)
phos = 2053 ppm (up 1356 ppm)
moly = 2 ppm (up 2 ppm)
The amount of ZDDPlus added to the oil, was the exact amount the manufacturer called for on the bottle. And the resulting psi value here was 24% LOWER than this oil had BEFORE the ZDDPlus was added to it. Most major Oil Companies say to NEVER add anything to their oils, because adding anything will upset the carefully balanced additive package, and ruin the oil’s chemical composition. And that is precisely what we see here. Adding ZDDPlus SIGNIFICANTLY REDUCED this oil’s wear prevention capability. Just the opposite of what was promised. Buyer beware.
103. Royal Purple 10W30 Break-In Oil conventional = 62,931 psi
zinc = 1170 ppm
phos = 1039 ppm
moly = 0 ppm
104. 10W30 Lucas Hot Rod & Classic Hi-Performance Oil, conventional = 62,538 psi
zinc = 2116 ppm
phos = 1855 ppm
moly = 871 ppm
105. 0W20 Klotz Estorlin Racing Oil, API SL synthetic = 60,941 psi
zinc = TBD
phos = TBD
moly = TBD
106. 10W30 Comp Cams Muscle Car & Street Rod Oil, synthetic blend = 60,413 psi
zinc = 1673 ppm
phos = 1114 ppm
moly = 67 ppm
This oil is manufactured for Comp Cams by Endure.
107. 10W40 Torco TR-1 Racing Oil with MPZ conventional = 59,905 psi
zinc = 1456 ppm
phos = 1150 ppm
moly = 227 ppm
108. 10W40 Summit Racing Premium Racing Oil, API SL = 59,483 psi
This oil is made for Summit by I.L.C.
zinc = TBD
phos = TBD
moly = TBD
NOTE: This oil line was discontinued in Spring 2013.
109. 10W40 Edelbrock conventional = 59,120 psi
zinc = TBD
phos = TBD
moly = TBD
This oil is manufactured for Edelbrock by Torco.
110. 0W20 LAT Synthetic Racing Oil, API SM = 57,228 psi
zinc = TBD
phos = TBD
moly = TBD
111. “ZDDPlus” added to O’Reilly (house brand) 5W30, API SN, conventional = 56,728 psi
zinc = 2711 ppm (up 1848 ppm)
phos = 2172 ppm (up 1356 ppm)
moly = 2 ppm (up 2 ppm)
The amount of ZDDPlus added to the oil, was the exact amount the manufacturer called for on the bottle. And the resulting psi value here was 38% LOWER than this oil had BEFORE the ZDDPlus was added to it. Adding ZDDPlus SIGNIFICANTLY REDUCED this oil’s wear prevention capability. Just the opposite of what was promised. Buyer beware.
112. “ZDDPlus” added to Motorcraft 5W30, API SN, synthetic = 56,243 psi
zinc = 2955 ppm (up 1848 ppm)
phos = 2114 ppm (up 1356 ppm)
moly = 76 ppm (up 2 ppm)
The amount of ZDDPlus added to the oil, was the exact amount the manufacturer called for on the bottle. And the resulting psi value here was 12% LOWER than this oil had BEFORE the ZDDPlus was added to it. Adding ZDDPlus SIGNIFICANTLY REDUCED this oil’s wear prevention capability. Just the opposite of what was promised. Buyer beware.
113. 0W Mobil 1 Racing Oil = 55,080 psi
zinc = 1952 ppm
phos = 1671 ppm
moly = 1743 ppm
114. “Edelbrock Zinc Additive” added to Royal Purple 5W30, API SN, synthetic = 54,044 psi
zinc = 1515 ppm (up 573 ppm)
phos = 1334 ppm (up 517 ppm)
moly = 15 ppm (up 15 ppm)
The amount of Edelbrock Zinc Additive added to the oil, was the exact amount the manufacturer called for on the bottle. And the resulting psi value here was a whopping 36% LOWER than this oil had BEFORE the Edelbrock Zinc Additive was added to it. Adding Edelbrock Zinc Additive SIGNIFICANTLY REDUCED this oil’s wear prevention capability. Just the opposite of what was promised. Buyer beware.
115. 10W30 Comp Cams Break-In Oil conventional = 51,749 psi
zinc = 3004 ppm
phos = 2613 ppm
moly = 180 ppm
116. “Edelbrock Zinc Additive” added to Lucas 5W30, API SN, conventional = 51,545 psi
zinc = 1565 ppm (up 573 ppm)
phos = 1277 ppm (up 517 ppm)
moly = 15 ppm (up 15 ppm)
The amount of Edelbrock Zinc Additive added to the oil, was the exact amount the manufacturer called for on the bottle. And the resulting psi value here was a “breath taking” 44% LOWER than this oil had BEFORE the Edelbrock Zinc Additive was added to it. Adding Edelbrock Zinc Additive SIGNIFICANTLY REDUCED this oil’s wear prevention capability. Just the opposite of what was promised. Buyer beware.
117. “Edelbrock Zinc Additive” added to Motorcraft 5W30, API SN, synthetic = 50,202 psi
zinc = 1680 ppm (up 573 ppm)
phos = 1275 ppm (up 517 ppm)
moly = 89 ppm (up 15 ppm)
The amount of Edelbrock Zinc Additive added to the oil, was the exact amount the manufacturer called for on the bottle. And the resulting psi value here was 22% LOWER than this oil had BEFORE the Edelbrock Zinc Additive was added to it. Adding Edelbrock Zinc Additive SIGNIFICANTLY REDUCED this oil’s wear prevention capability. Just the opposite of what was promised. Buyer beware.
118. 30wt Lucas Break-In Oil conventional = 49,455 psi
zinc = 4483 ppm
phos = 3660 ppm
moly = 3 ppm
*************** MOTOR OIL VISCOSITY SELECTION **************
THE BENEFITS OF USING THINNER OIL:
• Thinner oil flows quicker at cold start-up to begin lubricating critical engine components much more quickly than thicker oil can. Most engine wear takes place during cold start-up before oil flow can reach all the components. So, quicker flowing thinner oil will help reduce start-up engine wear, which is actually reducing wear overall.
• The more free flowing thinner oil at cold start-up, is also much less likely to cause the oil filter bypass to open up, compared to thicker oil. Of course if the bypass opened up, that would allow unfiltered oil to be pumped through the engine. The colder the ambient temperature, and the more rpm used when the engine is cold, the more important this becomes.
• Thinner oil also flows more at normal operating temperatures. And oil FLOW is lubrication, but oil pressure is NOT lubrication. Oil pressure is only a measurement of resistance to flow. Running thicker oil just to up the oil pressure is the wrong thing to do, because that only reduces oil flow/lubrication. Oil pressure in and of itself, is NOT what we are after.
• The more free flowing thinner oil will also drain back to the oil pan quicker than thicker oil. So, thinner oil can help maintain a higher oil level in the oil pan during operation, which keeps the oil pump pickup from possibly sucking air during braking and cornering.
• The old rule of thumb that we should have at least 10 psi for every 1,000 rpm is perfectly fine. Running thicker oil to achieve more pressure than that, will simply reduce oil flow for no good reason. It is best to run the thinnest oil we can, that will still maintain at least the rule of thumb oil pressure. And one of the benefits of running a high volume oil pump, is that it will allow us to enjoy all the benefits of running thinner oil, while still maintaining sufficient oil pressure. A high volume oil pump/thinner oil combo is preferred over running a standard volume oil pump/thicker oil combo. Because oil “flow” is our goal for ideal oiling, NOT simply high oil pressure.
• Oil flow is what carries heat away from internal engine components. Those engine components are DIRECTLY oil cooled, but only INdirectly water cooled. And better flowing thinner oil will keep critical engine components cooler because it carries heat away faster. If you run thicker oil than needed, you will be driving up engine component temps.
• Thinner oil will typically increase HP because of less viscous drag and reduced pumping losses, compared to thicker oils. That is why very serious Race efforts will generally use watery thin oils in their engines. But, an exception to this increase in HP would be in high rpm hydraulic lifter engines, where thinner oil can allow the lifters to bleed-off at higher rpm. In everyday street vehicles, where fuel consumption is a consideration, thinner oils will also typically increase fuel economy. The majority of new cars sold in the U.S. now call for 5W20 specifically for increased fuel economy. And now Diesel trucks are increasingly calling for 5W30, also for fuel economy improvement.
• With the exception of high rpm hydraulic lifter engines, almost no engine should ever need to run oil thicker than a multi-viscosity 30 weight. The lower the first number cold viscosity rating, the better the cold flow. For example, 0W30 flows WAY better cold than 20W50. And 0W30 flows WAY better cold than straight 30wt, which is horrible for cold start-up flow and should be avoided at all cost. And the lower the second number hot viscosity rating, the better the hot flow. For example, 0W30 flows WAY better hot than 20W50.
• Thicker oil DOES NOT automatically provide better wear protection than thinner oils. Extensive “dynamic wear testing under load” of dozens and dozens of motor oils, has shown that the base oil and its additive package “as a whole”, is what determines an oil’s wear protection capability, NOT its viscosity. For example, some 5W20 oils have proven to provide OUTSTANDING wear protection, while some 15W50 oils have only been able to provide MODEST wear protection. So, do not run thicker oil under the false assumption that it can provide better wear protection for our engines.
• BOTTOM LINE: Thinner oils are better for most engine lubrication needs.
540 RAT
Member SAE (Society of Automotive Engineers)
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Doug Hillary did OTR truck testing of Delvac 1 for Exxon-Mobil for over a million Kilometers through the Australian outback, which included random tear-downs and inspections.
I don't understand why XOM would contract people like Doug and run their own massive and extensive testing facility when they could just slap together a blend that aces the Timken test and it would be the BESTEST OIL OF ALL TIME!!!!!!!1111ONE.
Because he's qualified to speak on the subject that makes his a target for this type garbage? Really? This is possibly the saddest thing I've ever seen posted on this site.
The guy's description of the device sounds like a Timken machine. Similar to AMSOIL's 4-ball wear test in nature.
He makes these statements:
