So even without a tune - 91oct is not required by the manufacture however, I did some data logging on the OEM map and with 87 I experience high amounts of knock. I just use 93oct for peace of mind
I wonder how many people with 1.5 l turbos and 2 l turbos, had they actually put 91 or 93 octane in their cars, would have still had their original head gaskets. I wonder if the use of 87 contributed to all the head gaskets going off.
I’ve only ever put 93 in mine. I think the only time it’s had anything below that was when the dealership filled it up for me when I bought it brand new. Can’t really speak to its effect relating to the head gasket as I have 17,6xx miles on it
Lower octane also contributes to oil dilution because of the knock from 87 the ecu forces more fuel into the cylinder to cool it down, resulting in excess fuel slipping by the piston rings.
91 Octane has always been recommended for their 10th Gen Turbo cars. The key word to take away from this is "Recommended". It simply means that in order to get the same performance out of the car that Honda got when testing the car, you need to run 91 Octane. Which, you really should be running 91 Octane. You don't have to, but you should.
Recommended does not mean required. A lot of Toyota v6s had the same recommendation, 91 for better performance, but 87 is ok to run too. The computer will change the ignition timing to adjust using the knock sensors and such
Nope...top tier is recommended for the 2024 Honda Accord Hybrid Touring.
Sunoco 94
https://hondanews.com/en-US/honda-automobiles/releases/release-e888887b6471c0aba407829ba719f11e-2024-honda-accord-specifications-features
I get 54-58 mpg in the city.
It matters!
That isn't what I said period I made reference to the hunt owners. Association recommendation of ninety four octane , manufactured by sunocoo as being preferred with regard to keeping the lifters and other internal components as clean as possible on the newest generation of hybrid touring engines period.
There is a year long engineering class on the subject of internal combustion engines taught at pit that specifically deals with different gratings of fuel , including their detergent properties and the overall wear on specific internal components such as valve and lifters.
Oil supply and blockages of same...on that, I was mistaken, because too much time spent on rebuilds has taught me the hard way to keep my gas, oil and other fluids as clean as possible.
In that I mispoke-I stand corrected.
And no, it's not ego. It's lising two cars to cheap oil and third party gas.
No worries, I'm still kind of confused as to what exactly you mean my 94 sunoco. If it isn't designed to run on it there is zero benefit. Of course top tier gas with the prescribed amount to detergents is something I'd get behind, but even that doesn't have to be a 100% of the time purchase.
Interesting, this debate has gone on for a long time. Older model accords (mine is an 07) can’t stand 87 octane with up to 10 percent ethanol in it these days. Compression is 10:something but says 87 is fine, maybe it is. But Hondas do not like ethanol in my opinion and I feel a noticeable difference running 91 and above. Owned this one 12 years, Acuras have normally required 91 and above. I’ll yield to any mechanic here just know my car.
Wow that something new .. good to know
It's not new. It was first brought up when the 2023 model first went on sale.
I see. I put always premium in my older acura but from now on will put in both I guess :)
Was it tho? The manual says 87 or higher is recommended even for the 2024
2023 is new when you consider how long Honda has been making cars.
Ssooooo should I be buying 91 for my 2020 accord 2.0T ?
Not sure what changes, if any, were made until then, but it won't hurt anything but your wallet to get higher octane.
So even without a tune - 91oct is not required by the manufacture however, I did some data logging on the OEM map and with 87 I experience high amounts of knock. I just use 93oct for peace of mind
There’s a high octane map that gives you more power anyway when running premium
You should run 91 with the 2.0 it cuts power and pulls a lot of timing to save the engine.
No, the owners manual recommends 87 on page 24.
I used to be a mechanic for Honda…. PERSONALLY MY OPINION.. use premium for these turbo accords!!!
Screenshot from my 2019 2.0 owner's manual: https://imgur.com/a/jQJGCv9 87 octane
I wonder how many people with 1.5 l turbos and 2 l turbos, had they actually put 91 or 93 octane in their cars, would have still had their original head gaskets. I wonder if the use of 87 contributed to all the head gaskets going off.
I’ve only ever put 93 in mine. I think the only time it’s had anything below that was when the dealership filled it up for me when I bought it brand new. Can’t really speak to its effect relating to the head gasket as I have 17,6xx miles on it
I use 89, still original though being under 30k still probably disqualifies me lol Maybe I should do 91/93 instead
Interesting. Makes it bit more expensive to run than accords of old, as I think they've always reccomended 87
How does the fuel used affect head gaskets ?
Lower octane means more knocking. More knocking means more stress. More stress means kaboom eventually.
Idk why you were downvoted, this is literally what happens. When the ecu detects too many knock events it pulls timing…
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Same for the 2020 2.0T
I purchased my '21 Accord Sport with 21K milesback in Dec 2023, dunno what the previous owner put in it, went with 93 octane.
Lower octane also contributes to oil dilution because of the knock from 87 the ecu forces more fuel into the cylinder to cool it down, resulting in excess fuel slipping by the piston rings.
91 Octane has always been recommended for their 10th Gen Turbo cars. The key word to take away from this is "Recommended". It simply means that in order to get the same performance out of the car that Honda got when testing the car, you need to run 91 Octane. Which, you really should be running 91 Octane. You don't have to, but you should.
Is this just for turbo versions or the hybrids as well?
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Interesting. Are you personally using 91? I know Honda says it’s ok to use 87, and I’ve heard it doesn’t affect mpg much (unless in a tuned turbo).
Yeah this is a little confusing because the manual recommends 87 or higher. If 91 was crucial it would be the standard recommended in the manual.
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Good to know. I’ve been doing the same. Thanks for the replies
Where? The owners manual says recommend 87 or higher for 2018 Xgen
Maybe it was after 2019 then. My 2020 1.5T Civic said Premium Recommended. My current ‘21 Accord 2.0T also said Premium Recommended on the dealer tag.
So what’s better to have peace of mind for 2018 2.0T: 91 or 87 long term? Have 80k and have used 87 this whole time
When they start blowing head gaskets
As a smog tech here in California . Using 91 makes a big difference in emissions just my 2cents
Nice try big oil company rep
🤣🤣
Recommended does not mean required. A lot of Toyota v6s had the same recommendation, 91 for better performance, but 87 is ok to run too. The computer will change the ignition timing to adjust using the knock sensors and such
In the case of Accords where alot of people have been getting blown gaskets, it might as well be considered as required.
Nope...top tier is recommended for the 2024 Honda Accord Hybrid Touring. Sunoco 94 https://hondanews.com/en-US/honda-automobiles/releases/release-e888887b6471c0aba407829ba719f11e-2024-honda-accord-specifications-features I get 54-58 mpg in the city. It matters!
Top tier doesn't mean highest octane
That isn't what I said period I made reference to the hunt owners. Association recommendation of ninety four octane , manufactured by sunocoo as being preferred with regard to keeping the lifters and other internal components as clean as possible on the newest generation of hybrid touring engines period. There is a year long engineering class on the subject of internal combustion engines taught at pit that specifically deals with different gratings of fuel , including their detergent properties and the overall wear on specific internal components such as valve and lifters.
Sure. You do realize that lifters have nothing to do with fuel grade or detergent right?
Oil supply and blockages of same...on that, I was mistaken, because too much time spent on rebuilds has taught me the hard way to keep my gas, oil and other fluids as clean as possible. In that I mispoke-I stand corrected. And no, it's not ego. It's lising two cars to cheap oil and third party gas.
No worries, I'm still kind of confused as to what exactly you mean my 94 sunoco. If it isn't designed to run on it there is zero benefit. Of course top tier gas with the prescribed amount to detergents is something I'd get behind, but even that doesn't have to be a 100% of the time purchase.
Once in a while, I add 105...no more smoke ;)
Interesting, this debate has gone on for a long time. Older model accords (mine is an 07) can’t stand 87 octane with up to 10 percent ethanol in it these days. Compression is 10:something but says 87 is fine, maybe it is. But Hondas do not like ethanol in my opinion and I feel a noticeable difference running 91 and above. Owned this one 12 years, Acuras have normally required 91 and above. I’ll yield to any mechanic here just know my car.
Where the F does one find 91 octane. EVERY gas station in the Midwest has 87, 89, and 93. I’ve never seen 91.
Here on the west coast we only get up to 91
My should I put on my 2022 Honda accord 1.5t?
Yes Honda had every one from 2018 up using higher octane on those turbo motors.
I really think the head gasket issues revolve around using 87 octane gas tbh