In reading your above forum ; billy bobs oil discussion; I see two things - It's all about price and base oils, however, you must know that the base stock is like the flour in a cake mix, it is only a very small part of the finished product. It's not the base stock that gets used up over time, but the additives that make up the rest of the mix. The better the additives, the longer the oil can perform it's duties. The better the additives, the better it can perform it's duties. It's the high quality and ratio of these additives to one another that is such a guarded secret between companies. You get what you pay for - period. That is why companies can offer different quality versions of the same grade of oil - they make the additive package progressively better so it does a better and longer job at protecting your engine. If you lose full film protection for just a second, you create a "sore" spot that will eventually lead to a failure. It is this factor that makes it necessary to put a high quality oil in our Vipers, and for that matter, any vehicle that is subjected to let's call it "severe duty" applications. Your daily driver minivan doesn't need it, but when your running red line lots, or tracking the car or pushing it hard, it's my opinion you should use the best possible oil. If I pay another $20 or $30 or $80 for my oil, oh well. This is a $100,000.00 car, I could care less if I spend $500 or $600 or $1000.00 at a shop per season for my servicing. This is not about using Amsoil vs Mobil 1 or Joe's discount oil, it's about not letting price direct your choices and putting "OK" oil in your baby.