Like the link you gave us to some miracle oil company a while back? Can't remember the name of the company, but I believed very little of what they said and a couple of people I discussed it with didn't believe their claims either. I can't remember, where you the person that gave us the link to the white oil company, or was it the one with the cars that have been going for years and years without changing the oil, just topping it up?

Just wondering, what do the super long life oils do with the combustion by products, things that make the oil dirty and less efficient? If the oil is in the car for 100k, that's roughly 10 times the average service mileage, so the oil has 10 times the amount of dirt to deal with. Not really a great idea as a lot of modern cars on longlife schedules are having sludge build ups and that's with 20k service schedules. That's due more to the additive package rather than the basestock. They could add more and more additives to stop the sludge, but a large component of the oil still needs to be basestock rather than just additives, so with the super long life oils, the basestock may well last 100k, but the additives are likely to have been used up long before then leading to sludge build ups etc.

How do these super oils stand up to race/track use and heavily modified engines?