Originally Posted By: OVERKILL
IIRC, a certain component will show high levels of oxidation in an oil when it isn't actually oxidation. It was discussed on here before. .
Indeed this is an oil thats tried-and-true, so no matter what it does chemically I tend not to think its anything. I did notice, however, there might be some basic oil thickening from oxidation, since after 10k miles usage KV100 was about the same as new oil, when we typically see some shearing of the VII after that many miles, so the theory is a bit of oxidation increased viscosity while the shearing reduced viscosity in about the same amount.
We'd have to see oxidation numbers for new oil and just get a difference, the only way to tell for sure.