I知 wondering how many on this forum use regular rather than premium and any advice on this? I知 trying to add a poll but not sure it is working. If not, just reply. Thanks much!

 

Per Owners Manual ----
FUEL for best performance:
Use of unleaded gasoline of 91 octane or higher is recommended.

1. TOP TIER detergent gasoline where available.
2. DO NOT use gasoline containing more than 15% ethanol.
3. DO NOT use gasoline containing methanol
4. DO NOT use gasoline containing MMT.

IF one wants to use a higher octane than needed, be my guest. Otherwise, save your money and take longer trips.

 

I use Sunoco 91, a top tier gas. I only use top tier, although I sometimes change octane, for no particular reason. Somehow, it just feels better on 91, and I get a bit better gas mileage, maybe 10%, but the price delta is greater than the mileage savings. But I usually do it anyway.

 

Costco 93 octane only. Top tier. Only paying 0.30 per gallon for premium.

 

I have only used regular 87 octane, and am averaging 27 mpg over 14,000 miles of mostly suburban driving.
Remember, 91 octane is not required, just recommended, as has been written here in the past, and 91 is likely needed to justify the published 272 HP rating. Whatever the "reduced" HP is using 87 is just fine with me for the type of driving I do. If i was interested in the best 0-60 times, then I might consider using 91.

Make your own decision. Bottom line is you can use either...but not less than 87.

 

NOTE: Owner's Manual does say: "for best performance" -- doesn't say cannot use lower octane, but don't do the " Do not (s)"

 

owners manual does not explain why premium is recommended.
Use of unleaded gasoline of 91 octane or higher is recommended

 

Doesn't anyone search anymore?

This old poll on the same subject is still open:
https://acurazine.com/forums/third-g...r-fuel-970993/

Also, a long thread on it:
https://acurazine.com/forums/third-g...leaded-979323/

 

yes I read the other threads. I was not asking if I could use premium or regular. I was curious as to what the majority of the owners actually use.

 

I think poll says that more people use premium, but good portion of people use regular.

 

Yes, combining both polls, it looks like around 70%.

 

I use Leaded 85 Octane from an unbranded station. I regularly beat Lambos and 911 Turbos from 0-100.

 

To me, the gas grade depends on hard you're pushing the engine. 'Pedal to the Metal' mean high boost and high combustion pressure - that warrants premium. Puttering around town, pressures are lower and premium isn't necessary. I use whatever grade my upcoming driving warrants.