Preferred fuel for 6.2 L LS3

[monstar]

Do United sell 'real' 95 octane fuel? Or do they sell E10 as '95'?
Reason being I was returning from Lakes Entrance with my daughter, was down to a quarter tank.
Usually top up the tank in Sale with BP 95, but BP was shut. So I topped up with United 95...
The poor Redline didn't like that stuff, it was down on power, and ran pretty rough at idle.
Even my daughter noticed it. We got back OK, but the car was running vapours by the time I got home.
I normally use less than half a tank for the same journey.
Refilled with BP 95, and the car was back to normal.

What year is the Redline?

 

[lmoengnr]

Its an MY 12, March build, AFM and Ethanol compatible.

 

[monstar]

Interesting, more ethanol or water than 10% else has to be a sensor. Fuel sensor needs re-calibrated maybe? See below tune treats =<10% as e0 then whammo steep curve back to meet trend at 20%. So any reading over 10% is a doozy step for most areas of the tune, runs terrible if composition is not accurate down at that fraction. Is less important above 20%.

 

[07GTS]

some tune files see e10 as a standard now so that may explain the same figure till it goes over the 10%, does it still have 14.7 in the stoich or 14.1 for e10 ?