I converted over to bmw oil today. It was expensive like 40 bucks for it, but it was worrth every penny. I only bought it because I needed an oil change and I was at work. I was not expecting any performance increase but I was wrong. Throttle Response was way better, alot smoother. It seemed it had a little more get up and go to it, but I think this was because the throttle response was smoother. It seemed like my engine was just moving alot more efficentlly. I say it is worth the money and I recomend using it.