Just curious is all but who is running what in what ? ka, sr etc…
87, 91, 93, 94 ?
Ive read on some more american based 240 boards that they only get 91 for the highest oct in the states? so how is 91 on SR ?
I usually put in 94 but when I’m lazy and dont want to find a sunoco I’ll put in $10 of 93.
I use 89 in my KA every fill.
SR’s are fine on 91 unless they are running crazy numbers. Thats all I put in my car.
I run 91 on my bone stock KA b/c that’s what the booklet tells me 
How it works:
Higher octane = resists pre detonation (aka harder to ignite)
Basically you should run the lowest octane that doesn’t cause knocking in your engine.
If you are bone stock you should run 87 (for a KA … don’t ask me about sr)
Advanced timing, cams, higher compression, turbo, etc etc = you’ll likely need/want a higher octane to prevent detonation.
But the point i’m trying to get across is that if you are not having problems with detonation buying more expensive fuel is just flushing your money down the toilet.
Only 94 for my ka.
^^ jealous.
one day i’ll be there … if i ever finish school. 
94 when its not brutally expensive. never less than 91 tho no matter what the cost. i notice no difference between the two.
my KA runs on water lol
I run Petro Canada 91 every time not matter the price, I get a
min of 40+km to the tank using 91 as apose to 87. KA’s were
designed for 91 Octane. They automajically retard timing when
running under 91 octane hindering preformance and milage.
I always use 91 and up.
I used to use Petro Canada 91, but since the build i only use 94
Only run 94.
My car tells me to do it.
Any lower and it’s like “I hate you.”
I run 87 and get almost 600 highway… about 450-500 city.
lol what would 87 do to a 1.8 turbo when it’s already runing rich?
i use 91 seems to be the best.
and fuck mike ur car must be running great, i couldnt make it to windsor 500k without stoping for gas, Mind you the windows were all down
i hope everyone using 90+ octane is running some sort of forced induction, high compression or has a really old motor that knocks otherwise like someone said in previous post, waste of money.
Mr Jantos claims the motor backs off timing if you put lower octane but I didn’t think it was that advanced.
The way I understand it the engine runs normally … then if the knock sensor decides the engine is pinging then it severly retards the timing. Not butter.
Adam ?