Premium Gasoline

[c502cid]

The nice thing about my 2002 Blazer is it runs the same on top tier gas or gas from Billy Bob's cut rate gas station.

Mine too....85 octane.

 

[raaizin]

We have a 2019 Q5 2.0t which can run on 87 octane. I believe manual says recomend premium but will run on 87. I have used 87 for over 25 k miles. We use this for roadtrips mostly and get about 32mpg with either grade of fuel. It is rated 22 city/27 highway It really doesnt improve with 93. We also had a 2018 A4 and 2018 Q5 and have used 87 in each for a total of bout 50k miles combined. I have Never heard any detonation. Our Porsches get premium. Below is average mpg for 29k miles 70/30 highway city miles in ourn2018 Q5

 

[wtd]

My Mazda CX5 has the 2.5L turbocharged engine. It is also a high compression engine. Mazda's engineers designed the car so that you can run as low as 87 MPG octane without pinging, but you don't get the full 250 horsepower unless you run 93 octane. You give up about 25 HP with the lower octane. And many owners report they get better mileage by a couple of MPG with premium fuel too.
I suppose if I was going to make a long freeway road trip I might use lower octane to save a few bucks but I live in the mountains and want all the power I can get so I use nothing but premium.

My Jaguar has a supercharged V8 and god forbid using anything less than 91 octane. I'd use 93 if it was available in California,

My 2014 Mustang GT is like that. You can use 87 octane but they recommend 91 or above for full power. If you run 87, the engine will have reduced horsepower. I always run premium in it for that reason.

 

[Tahoe4Life]

Direct was said to be able to eliminate the need for premium even going so far as to state partial compression ignition (16.5:1 compression) was fine for 87 octane on gdi

My other half has a 2018 6.2 Escalade. Runs perfectly fine on 87 octane for the past 120K miles.

 

[Rmay635703]

My other half has a 2018 6.2 Escalade. Runs perfectly fine on 87 octane for the past 120K miles.

Updated e-Skyactiv X engine makes its debut in the 2021 Mazda CX-30 and 2021 Mazda3 | Automotive World

The 2021 model year versions of the Mazda CX-30 and Mazda3 see the debut of the updated version of Mazda’s unique Skyactiv-X SPCCI Spark Controlled Compression Ignition petrol engine

www.automotiveworld.com

Supposedly that runs on RUG

15-16:1 compression ratio