Thanks for thinking of me.
I checked and found:
So it won't hurt I think.
Q. How does high-octane gas help?
A. Compared to regular gas, high-octane gas requires higher temperature and pressure to ignite, so it can withstand higher compression without reigniting. As such, it's less likely to result in premature ignition, and therefore prevents pinging and/or knocking.
In other words, it's a form of protection for high compression engines.http://www.cartalk.com/sites/default...ages/icon3.gif Q. So, I should use high-octane gas to prevent pinging?
A. High-octane gas will prevent pinging.
But these days most cars have something called a knock-sensor, that will - under many circumstances - obviate the need for premium gas. Just about any car that's more recent than about 1996 will have a knock sensor.