Thank you. The takeaway here is that it is generally understood that oils will thicken with age. If you formulate with VI improvers that are less stable the resulting loss from the VI improver and the slight thickening with age will cancel each other out. Yes it is less important on an xW20 than a formulation than one that has higher VI concentration. I chose to not even buy 35 SSI VI Improvers for my plant. We sell more products with a higher split. We also use Star polymers that have even better shear stability than OCP’s. It is not uncommon to see a rise in vis with our products vs a loss that you would expect to see. What Bryce has seen here is much like what Wayne saw with his sample data. Long drain, great wear trends, and little to no oil consumption. This of course perfectly checks off the list of performance we intend to bring to the table. Long drains aren’t for everyone. For those looking for extended drains, we will likely be good friends.
David