I was wondering other's opinions on high octane in the GL. Some folks on the SaturnFans boards have mentioned that high-octane fuel is recommended (but not required) in the Aura GL, which has what I thought was the same LAT powertrain.

I have never used high test in our VUE GL and didn't think it was necessary or recommended, which I thought was somewhat odd given the engine's variable valve technology and higher compression ratio. Thoughts?