Just put in my new BND Quantum Blue motor oil a few hours ago. First off, when going to the dealership, I felt pretty badass taking oil jugs that say on the label that they are custom blended for "Brent Binns" :biggrinjester: . But onto the real review, my engine is definitely a lot more quiet. If I didn't have an exhaust I don't know if I could tell that it was running. The drive feels smoother and I want to say the car feels a little more aggressive almost like it's been awoken; however, I have not driven it enough to tell if this is just my imagination or not. Overall, I was very pleased. Brian has INSANE customer service. I don't know many vendors on here besides BT that really care about the customer as much as he does. Brian seems very dedicated to his work and I believe that attributes to the success of his products.