Gas type?

[Jthecub]

I know it sounds silly but I just bought a 2013 R Spec sedan. It didn’t come with an owners manual and yes I tried searching for one online and couldn’t find one. Should I be using 91 octane? The gas cap doesn’t say anything. I have been using 87 but don’t want fo reduce performance or wear out my engine if I am using the wrong fuel.

 

[princelybug]

Found on page 1-3:

https://justgivemethedamnmanual.com/manuals/2013_hyundai_genesis.pdf

 

[RSpectnewbie]

It will run on 87, but HP will drop to 420hp. 429hp is based on 91. If you go with a performance tune you should keep to 91. I just bought a '13 R Spec as well, I figure to just keep putting in 91 despite the extra cost. Going for a performance tune later in the summer so figure I'd get used to the extra cost early.

BTW, pretty sure the manual is around somewhere. I got one with the car but also found an electronic one online.

I know it sounds silly but I just bought a 2013 R Spec sedan. It didn’t come with an owners manual and yes I tried searching for one online and couldn’t find one. Should I be using 91 octane? The gas cap doesn’t say anything. I have been using 87 but don’t want fo reduce performance or wear out my engine if I am using the wrong fuel.

 

[Jthecub]

It will run on 87, but HP will drop to 420hp. 429hp is based on 91. If you go with a performance tune you should keep to 91. I just bought a '13 R Spec as well, I figure to just keep putting in 91 despite the extra cost. Going for a performance tune later in the summer so figure I'd get used to the extra cost early.

BTW, pretty sure the manual is around somewhere. I got one with the car but also found an electronic one online.

Thank you! I am going to have to look into that tune as well!

 

[Bill K]

Years ago, I read the using Premium will only give you a 3 to 4 HP boost, with the 5.0L....Hardly worth it.

 

[Jthecub]

Years ago, I read the using Premium will only give you a 3 to 4 HP boost, with the 5.0L....Hardly worth it.

The real question is will it be healthier for the engine in the long run

 

[Bill K]

The real question is will it be healthier for the engine in the long run

The answer is No.