EighTT

I don't think that the difference is quite as noticable with the naturally aspirated 3.2 V6 versus the turbo 180/225. Still, I can definitely feel a boost in power with the 91 octane premium (91 is about as good as it gets here in California).

Hopefully, prices will continue to drop, as fuel prices were getting a bit ridiculous.

Cameron

Use gas below the octane rating suggested for your car. Yeah, real smart.

PGTT

It's not worth trashing the engine IMO. Premium only for high compression engines.

Laguna

Is it okay to run any grade less than 91 in the 3.2s? Does that engine tolerate lower RON?

SereniTTy

Especially now that the % increase is so much less than when I started making comparisons. Haven't compared with the TT. I put the 93 APR chip in way too soon to try lesser gas, and it does require 91 even without the chip.

ddev

You may have a slight drop in performance, but as long as there is no predetonation it's not like you're hurting the car...

TTschwing

If you drive like a Grandma....:-)

blueprinTT

....dunno for sure. Of course you've had plenty of experience dealing with them Brad! ;-)

ddev

I run 93 normally, but have gone through many tanks of 89 with absolutely no change in mileage.

SereniTTy

always saw a difference, So I'd just buy the good fuel for the other benefits. Liek I said I never tried with teh TT since you wouldn't catch me putting 87 in that car unless I was going to be stranded otherwise. I even turned down cheap "premium" two weeks ago because it was 92 octane not 93. For the tiny price differance I'm not going to take chances.