I switched at 50k and never have leaked or lost oil.
Furthermore, I can now consider that my engine will look the same at 300k as it did at 50k. Ridiculous? Sure, because the rest of the car will probably not last that long, or I'll spin a bearing, or something else will go long before I hit that point. But meanwhile, the engine has scientifically proven better protection against oil failure.
But who cares about that? I also got a slight hp boost, and the engine runs smoother and cooler, and that's a benefit I don't have to wait 200,000 miles to appreciate.
