I have always used this stuff in our LS430. I have been putting it in the LS500 too. Should I start mixing the cheaper stuff with it or just go to 87 octane?

 

My opinion this stuff is not worth it for any vehicle outside a classic that maybe can’t handle ethanol or any equipment or boats that can’t handle ethanol. The only time I personally buy this stuff is for spare / emergency gasoline I keep in the garage long term as ethanol absorbs water apparently. Figure this will keep longer.

I’d personally just run premium and save your money. Unless for whatever reason you’ve calculated that you get increased MPG that offsets the additional cost. I’ve never seen a difference on the few cars I’ve tried ethanol free premium in.

EDIT: that price isn’t too shabby I don’t think. I would say that is my local price for regular premium here. Our ethanol free premium seems to run nearly $1 more per gallon than the regular premium. The other thing is our regular premium here is 92 octane vs 91 on the ethanol free. Does that make a power difference?? Some parts of the country I think get 93 premium. If I recall California was 91 premium even with ethanol.