That and Mobil 1 0-30 / 0-50 racing oils have a high amount(too much) of Zinc/Phosphorous with a good dose of Molybdenum. I can't think of another oil that has more Molybdenum than M1 race oil.
ROD
ROD
BerndV said:If I were designing an oil, I would start with base oils that possess very high inherent VI such as Mobil Spectrasyn Ultra 150 with a VI of 218. You would still end up well under 200 after blending with other base oils and additives if no polymer VII were used.
You cannot start with an oil like SpectraSyn Ultra 150 since it has a KV100 of 150cSt, at best you can use it as a high VI VM in very small doses.
The highest VI of a light 4cSt base oil is about 140 and about 150 for a 8cSt oil.
Joe Gibbs Driven (or Lubrizol their formulator) does use very thick PAO 200 VI VM's instead of polymer VIs, to produce some of their oils such as their DT40 5W-40 with a final VI of 172.
Keep in mind that even formulators that claim to use no polymer VIs still likely use polymer based dispersants as part of the DI package which is how you can get finished VIs in the 160 and 170 range; the base oils alone can't do it.
As Garak alluded, not using some quality high VI polymer VIs really limits a formulators options in designing a high VI finished oil. Even Mobil, the maker of many high VI heavy PAOs chooses to use some polymer VIs in the formulation of it's 0W-30 and 0W-50 race oils.
My point in stating that I would start with something like Spectrasyn Ultra 150 was precisely to avoid the use of polymer VII. Many other BLENDING options are available including Spectrasyn Elite 65. My point was simply that there is NO way to achieve VI over 200 without using VII's. Furthermore, IMO, VI is not the end-all be-all of PCMO specs that that ostensibly warrants constant overemphasis. Many end users have a preference for shear stability over ultra high VI, which is why many specialty blenders avoid VII's in their products. For example, Redline's apparent avoidance of VII in their revised 0W-30 makes it more appealing to me, not less. I would rather start with a 0W-30 that remains a 0W-30 than start with a 0W-40 that ends up being a 0W-30.
BerndV said:If I were designing an oil, I would start with base oils that possess very high inherent VI such as Mobil Spectrasyn Ultra 150 with a VI of 218. You would still end up well under 200 after blending with other base oils and additives if no polymer VII were used.
You cannot start with an oil like SpectraSyn Ultra 150 since it has a KV100 of 150cSt, at best you can use it as a high VI VM in very small doses.
The highest VI of a light 4cSt base oil is about 140 and about 150 for a 8cSt oil.
Joe Gibbs Driven (or Lubrizol their formulator) does use very thick PAO 200 VI VM's instead of polymer VIs, to produce some of their oils such as their DT40 5W-40 with a final VI of 172.
Keep in mind that even formulators that claim to use no polymer VIs still likely use polymer based dispersants as part of the DI package which is how you can get finished VIs in the 160 and 170 range; the base oils alone can't do it.
As Garak alluded, not using some quality high VI polymer VIs really limits a formulators options in designing a high VI finished oil. Even Mobil, the maker of many high VI heavy PAOs chooses to use some polymer VIs in the formulation of it's 0W-30 and 0W-50 race oils.
My point in stating that I would start with something like Spectrasyn Ultra 150 was precisely to avoid the use of polymer VII. Many other BLENDING options are available including Spectrasyn Elite 65. My point was simply that there is NO way to achieve VI over 200 without using VII's. Furthermore, IMO, VI is not the end-all be-all of PCMO specs that that ostensibly warrants constant overemphasis. Many end users have a preference for shear stability over ultra high VI, which is why many specialty blenders avoid VII's in their products. For example, Redline's apparent avoidance of VII in their revised 0W-30 makes it more appealing to me, not less. I would rather start with a 0W-30 that remains a 0W-30 than start with a 0W-40 that ends up being a 0W-30.
Actually their is no way to make a light finished oil with a VI of even 180 without using polymer VIs let alone 200.
Regarding Red Line oils, their original 183 VI 0W-30 was a shear stable oil as was their 197 VI 0W-40. All RL oil are shear stable. The Sustina 0W-20 with it's 229 VI is shear stable.
TGMO 0W-20 with it's 216 VI has proven to very shear stable.
The point is, you can formulate a very high VI oil today using the latest polymer technology that are shear stable. You can no longer generalize that high VI oils are automatically shear prone. Many still are, such as the GP III based 5W-50s, so you have to choose your oil carefully.