Re: V8s- Which gas do you use?
All the Shell grades here have "up to 10%Ethanol". Premium 93 would be great if the PCM was tuned for it, but the stock tune is "maxed out" for best performance with 89, so premium is definitely not necessary.
2014 Jeep GC Limited 4X4 V8 QD2
2012 Cadillac CTS-V Coupe
2011 Chevy Corvette Z06/07