Sponsored

What octane fuel are you running?

What octane fuel are you running?

  • 87 or less

    Votes: 0 0.0%
  • 88-90

    Votes: 0 0.0%
  • 91-92

    Votes: 10 19.6%
  • 93 or higher

    Votes: 39 76.5%
  • Ethanol blend above 10%

    Votes: 2 3.9%
  • 91 E0 non-oxy

    Votes: 0 0.0%

  • Total voters
    51

KrackaC8

Well-Known Member
First Name
Christopher
Joined
Nov 23, 2025
Threads
9
Messages
1,198
Reaction score
1,775
Location
Sioux City, IA
Car(s)
2023 Z Performance, 2024 Grand Cherokee, 2023 Wrangler Rubicon
Occupation
Commodities
Please vote; voters are anonymous.

(R+M)/2 octane rating (standard method in the US)
 
OP
OP
KrackaC8

KrackaC8

Well-Known Member
First Name
Christopher
Joined
Nov 23, 2025
Threads
9
Messages
1,198
Reaction score
1,775
Location
Sioux City, IA
Car(s)
2023 Z Performance, 2024 Grand Cherokee, 2023 Wrangler Rubicon
Occupation
Commodities
Murphy USA 93-octane here now that I've moved. Only Murphy and Sam's Club sell 93 E10 here, everyone else is 91 E0.
 
OP
OP
KrackaC8

KrackaC8

Well-Known Member
First Name
Christopher
Joined
Nov 23, 2025
Threads
9
Messages
1,198
Reaction score
1,775
Location
Sioux City, IA
Car(s)
2023 Z Performance, 2024 Grand Cherokee, 2023 Wrangler Rubicon
Occupation
Commodities
Mostly this, or 93, both e10

IMG_2035.webp
How has the Sunoco 94 performed for you? I tried running it on a few occasions in my Corvettes and they always idled & ran a bit rough.
 

jacksonmagnet

Member
Joined
Aug 28, 2026
Threads
0
Messages
6
Reaction score
7
Location
ny
Car(s)
z
No issues like that, don’t seem to notice a performance difference between them, just feel better about the 94, I got e0 94 once and that seemed maybe a little smoother, might just be in my head
 

5amp5on

Well-Known Member
First Name
EJ
Joined
Oct 13, 2024
Threads
11
Messages
528
Reaction score
1,036
Location
USA
Car(s)
2026 Pathfinder Platinum, 2024 Z Performance, 2023 Sentra SV
Occupation
Finance
Sinclair 93 is the only thing I put in the Z.
 
OP
OP
KrackaC8

KrackaC8

Well-Known Member
First Name
Christopher
Joined
Nov 23, 2025
Threads
9
Messages
1,198
Reaction score
1,775
Location
Sioux City, IA
Car(s)
2023 Z Performance, 2024 Grand Cherokee, 2023 Wrangler Rubicon
Occupation
Commodities

Nis Mo Z

Well-Known Member
First Name
Moses
Joined
May 30, 2025
Threads
1
Messages
255
Reaction score
522
Location
Loganville, Georgia
Car(s)
2024 Nissan Fairlady Z Nismo EWP
Occupation
service tech
I only mess with Shell 93 but then I put a small amount of ethanol in it to boost it to e15-20 since I run a TruControl.
 

zeroptzero

Active Member
First Name
Joey
Joined
Sep 7, 2026
Threads
4
Messages
38
Reaction score
32
Location
Ontario
Car(s)
26 Z
I will likely run 93 octane from Shell, but I can also get 94 from Petro Canada (Sunoco), if 94 is in the same price range as Shell's 93 I could use it as I get a discount at PC.

My dealer told me that we can use 87 octane without an issue, I don't have my owner manual yet as I get my car in 2 days, but upon further reading I think they are screwing with me. Dealers and sales people can be a problem quite often. My car is at the dealership (outdoors), on Friday I went to see the car and I told them to lock it up before the end of the day (like I really need to tell them that right ? ) . They said yeah no problem it will be locked and taken indoors over the long weekend. I went to dealership yesterday to show the car to my family members and it was outside, but it was also unlocked. I had to lock it up myself. Screwballs ! Good thing there was no homeless person sleeping in the car ;)
 
OP
OP
KrackaC8

KrackaC8

Well-Known Member
First Name
Christopher
Joined
Nov 23, 2025
Threads
9
Messages
1,198
Reaction score
1,775
Location
Sioux City, IA
Car(s)
2023 Z Performance, 2024 Grand Cherokee, 2023 Wrangler Rubicon
Occupation
Commodities
I will likely run 93 octane from Shell, but I can also get 94 from Petro Canada (Sunoco), if 94 is in the same price range as Shell's 93 I could use it as I get a discount at PC.

My dealer told me that we can use 87 octane without an issue, I don't have my owner manual yet as I get my car in 2 days, but upon further reading I think they are screwing with me. Dealers and sales people can be a problem quite often. My car is at the dealership (outdoors), on Friday I went to see the car and I told them to lock it up before the end of the day (like I really need to tell them that right ? ) . They said yeah no problem it will be locked and taken indoors over the long weekend. I went to dealership yesterday to show the car to my family members and it was outside, but it was also unlocked. I had to lock it up myself. Screwballs ! Good thing there was no homeless person sleeping in the car ;)
Your dealer flat out lied to you. The Z is 91+ per the owner's manual. Putting 87 in would be just asking for reliability/durability problems.
 
 






Top