octane

What fuel are you all using in your 2015 Genesis V6 and V8? I have a 2015 V8 and using regular gas 89 octane. Also is anyone using fuel additives such as Seafoam?

Per title anyone experience this? We bought my folks a 2013 Genesis V6 Sedan and it's getting a little knock off the line. Just wanted to get every ones feedback on this... Thanks

I have been using regular unleaded gas in my Equus (87 octane) and the car has been running fine. Just to compare, the last time I filled up the car I used super at a 93 octane level. I can feel a difference. The car feels like it is accelerating faster. Almost like the car has more lower...

ok, w/ gas prices soaring (4.29 for regular where i live and 4.50 for premium) at the pump and no end to these high prices in the near future, what are you guys using? i have always used premium (91 octane) but now i'm considering 87. just wondering if you will feel a difference in the...

Ok everyone, this is worth a read and forum discusion. To start....I am not the author of this article. I was very intrigued by this article and I believe it's a nice perspective that I don't believe is captured in the forum yet. Some viewpoints and opinions have been expressed in other...

Just drove home in a 4.6 and have 150+ miles to figure out what Octane I'm going to use in the beauty. A Sunoco fan with too many options (89,91 or 93). Any thoughts (mileage, performance, engine care ...) from the experienced?