• Welcome to CivicXI.com everyone!

    If you're joining us from CivicX.com, then you may already have an account here!

    As long as you were registered on CivicX.com as of May 24, 2020 or earlier, then you can simply login here with the same username and password!

Fuel Grade

Naija Bull

Member
Joined
Jan 30, 2022
Threads
6
Messages
31
Reaction score
20
Location
Houston
Vehicle(s)
2022 Si, 2017 Si (past), 2015 Si (past)
I've been putting 87 in all my Si's for the past 7 years, including my current one. Their engines have been bullet prove, no issues. If the manufacturer states 87 is acceptable, then it is. Why would they state that 87 is acceptable when it isn't long term and risk law suits? Put 87, 89, 91, 93 whichever you prefer, you'll be fine.
Sponsored

 

Integra23

Senior Member
First Name
Tom
Joined
May 31, 2022
Threads
3
Messages
592
Reaction score
440
Location
USA
Vehicle(s)
2023 Integra 6spd A-Spec
93 for my 93 tune
 

TypeRD

Senior Member
First Name
Ryan
Joined
Jan 20, 2023
Threads
2
Messages
1,207
Reaction score
1,222
Location
IL
Vehicle(s)
2023 Civic Type-R
I've been putting 87 in all my Si's for the past 7 years, including my current one. Their engines have been bullet prove, no issues. If the manufacturer states 87 is acceptable, then it is. Why would they state that 87 is acceptable when it isn't long term and risk law suits? Put 87, 89, 91, 93 whichever you prefer, you'll be fine.
I get what you’re saying, but it begs the question : Why would Honda engineers recommend 91 (spelled out right on the car itself)?
 

Naija Bull

Member
Joined
Jan 30, 2022
Threads
6
Messages
31
Reaction score
20
Location
Houston
Vehicle(s)
2022 Si, 2017 Si (past), 2015 Si (past)
I get what you’re saying, but it begs the question : Why would Honda engineers recommend 91 (spelled out right on the car itself)?
They recommend it simply to get the best possibe fuel economy and power output possible out of the engine. 91/93 will get you the best possible power and MPG, so Honda recommends that grade for the consumer. It has nothing to do with reliability of the engine.
 

TypeRD

Senior Member
First Name
Ryan
Joined
Jan 20, 2023
Threads
2
Messages
1,207
Reaction score
1,222
Location
IL
Vehicle(s)
2023 Civic Type-R
So, then, if one buys an Si (a performance oriented vehicle) and puts 87 in it, they’re really only depriving themselves of the intended driving experience.
 


Naija Bull

Member
Joined
Jan 30, 2022
Threads
6
Messages
31
Reaction score
20
Location
Houston
Vehicle(s)
2022 Si, 2017 Si (past), 2015 Si (past)
So, then, if one buys an Si (a performance oriented vehicle) and puts 87 in it, they’re really only depriving themselves of the intended driving experience.
Yep, that's pretty much it.
 

jtrader

Senior Member
First Name
James
Joined
Aug 28, 2018
Threads
1
Messages
465
Reaction score
230
Location
OH
Vehicle(s)
2019 Civic Hatch Sport 6MT, 2022 Odyssey EXL
Like others above…. It’s 93 only for me, but I’m lightly tuned so it’s a no brainer.
 
 




Top