Chip, you can roll your eyes all you want, but there is truth to that statement. And what's being sold for diesel oil today isn't the same as it was 5-10 years ago when older blends of Rotella, etc., were a lot of people's go-to oil even for performance gas engines.

* Diesel oils don't generally contain the anti-foaming additives that are found in oils intended for higher RPM applications. I can't say at what point those really come into play, but there's got to a be a reason why certain oils have them and others don't.

* Diesel oils have a much higher ratio of detergents to anti-wear additives. The issue here is those extra detergents are scrubbing away the anti-wear components instead of letting them adhere to the metal surfaces they're intended to protect.

I'm perfectly OK w/ anyone running what works for them. However, there are functional differences between diesel oils and performance gasoline engine oils that I believe people should at least be aware of.

Carry on!