Octane rating for KA24 question

[Noh0nda]

Is it true that on a ka you have to use premium gas or it will destroy your headgasket and ring lands? I'm f*** if so because that's be over 4$ a gallon.

[blkvrtswp]

No

[waxdnuggz]

Its recommended to run 91 octane but not necessary I run 89 religiously and when the funds permit I do run 91-93 octane. I can feel a difference. Idk if its a placebo effect or what. But I just feel like its more healthy. Not power obviously but I feel likeits just smoother.

[Alisaihin]

Its recommended to run 91 octane but not necessary I run 89 religiously and when the funds permit I do run 91-93 octane. I can feel a difference. Idk if its a placebo effect or what. But I just feel like its more healthy. Not power obviously but I feel likeits just smoother.

I actually can agree here, though my KA24 as of right now isn't the healthiest motor in the world. I was forced to use low octane gas at a stop...cause that's all the station carried (all my wut)! I try to baby my cars... (to the point I try not to use E10 blends of gas in my cars. Anything with Ethanol on cars that aren't made to handle it don't use it if I can help it...mostly because Ethanol is more corrosive to rubber fuel lines than straight gas.)

I'll have to refuel with premium grade just to see the difference now, if anything.

[Meoff Jack]

well I feel like my 240 gets s*** gas mileage so ever since I started putting premium I swear its getting better mpg...... could just be in my head but I think I lasts longer. I just put 3/4 worth or premium and 1/4 of regular since the recommended is 91 right? lol

[Meoff Jack]

does anyone get 29 mpg highway? I seriously think mine gets like 19 highway and 16 city......... I drive like a grandma to save gas.

[waxdnuggz]

I average 21-23 city 25-28 highway. 89 octane minimum and I drive like an ***hole

[jbracy7]

Mid grade is best,for mpg,and smoothness/knock

[waxdnuggz]

Mid grade is best,for mpg,and smoothness/knock

Premium is best for knocking. Not midgrade?

[waxdnuggz]

Mid grade is best,for mpg,and smoothness/knock

Premium is best for knocking. Not midgrade?

[Meoff Jack]

i dont really understand your statement. are you saying that premium gas makes it knock?
I have put all regular(89) and all premuim(93) and neither have ever knocked.....

[waxdnuggz]

Higher octane prevents knocking. It wont knock on a stock engine wkth stock timing but if you advance your timing and run regular it will certainly knock under heavy load (high rpm pull from a stop or uphill) I religiously run 89 octane or better. The fsm says premium fuel usage