I searched or at least i think i searched. I cant get anything but searched failed so maybe i dont know how to use it. Anyway i have owned a 99 gsr and a 2000 si both which needed 91 or higher. My ? is my 92 civic hatch has a d16y8 swap and im not sure if premium fuel is needed. I know the compression isnt that high but almost everyone that i have talked to says that all vtec engines require 91 or higher. Thanks in advance.

 

89

 

thanks any reason why 89 and not 87? I have been using 89 or higher.

 

wait my bad i meant 87

 

the Y8 has 9.6:1 89 is good. i ran 87 till i went boost now only premium.

 

87

 

cool thanks guys.

 

Wait, you're supposed to use 91 in a gsr?

 

89!!!!!

 

Well... on the gs-r gauge cluster it does say "Premium Unleaded Fuel Only"

I believe that you can run manby production cars on regular. I used to have a Mitusbishi 3000gt which said the same thing on the cluster and on the gas tank and i always filled it with regular. My friend has a $70,000 lexus LS430 and it is the same situation with him. His cluster says that as well and he puts regular

 

I use 89 in mine.

 

why do you think the engineers decided to put 'Premium unleaded fuel only' on certain cars?

I'm sure you might not feel/see any short term effects, but I wonder about long term effects..who knows..?

I think it's funny when I see people at the gas station with expensive Lexus' putting in the 'cheapest' gas...whether it makes a difference or not - that's debatable..but i just find it funny..they're all about 'having an expensive car'..but prolly don't know/care much about it.

Us Honda guys and and car enthusiast with cheaper cars take better care than the next schmoe with a $80k bimmer..ha

btw, I use 87 on my 92 vx (d15z1)..i used to use 89 the first three years i had it..but switched to 87 the past 2.5 or so years i've had it..no difference..same awesome MPG. I'll have to use 91+ plus octane booster on my SW20..boo ya

 

No lie^^ Whats the point of buying a 80 grand car if your going to treat it like ****?