Different Fuel grade for the Si?

tronvex · 05-16-2007, 03:08 PM

The service manual recommend Preumium gas for the Civic Si, but have anyone try different grade of gasoline for the Si? If so what did you guys notice about the changes? And does it affect the smog on the Si? Due to gas prices I'm thinking of switching fuel grade for my Si, since it the only car I have right now.

honda06si · 05-16-2007, 03:11 PM

your profile says you drive an ex.

but if you do drive an si. dont go with a lower octane, stick to the 91 or 93.

you will notice the diffrence. and plus the cost diffrence to fill up with 87 compared to 91 is like $3....so give something up that you buy once a week for $3

jonesthewine · 05-16-2007, 03:12 PM

Quote:

Originally Posted by tronvex

The service manual recommend Preumium gas for the Civic Si, but have anyone try different grade of gasoline for the Si? If so what did you guys notice about the changes? And does it affect the smog on the Si? Due to gas prices I'm thinking of switching fuel grade for my Si, since it the only car I have right now.

In before the lock.

I know what you mean...$2.20 extra per fill-up is a lot of cash.

r a y · 05-16-2007, 03:15 PM

higher octane is required for high compression N/A motors (11.0:1 Si)
If you use 87 you could experience pre-ignition/knocking and you're screwing up your motor from the inside.

***jpik2003*** · 05-16-2007, 03:19 PM

Is saving $2-3 really that important to you, that you'd be willing to risk damaging the engine?

**twistedframe** · 05-16-2007, 03:23 PM

What grade of gas? All gas questions answered! **Merged all gas threads**

05-16-2007, 03:08 PM	#1 (permalink)
tronvex Member Join Date: Apr 2006 Location: Southern California Posts: 69 iTrader: 0 / 0%	Different Fuel grade for the Si? The service manual recommend Preumium gas for the Civic Si, but have anyone try different grade of gasoline for the Si? If so what did you guys notice about the changes? And does it affect the smog on the Si? Due to gas prices I'm thinking of switching fuel grade for my Si, since it the only car I have right now.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Boosting an FG FAQ	Highrev1	Forced Induction And Nitrous	53	10-07-2008 01:45 PM
Nitrous 101	FG*SQUAD Nick	Forced Induction And Nitrous	22	05-26-2007 01:50 AM
possible ajp/turbo/supercharger issue? reflash? fuel?	sickyute	Forced Induction And Nitrous	55	02-21-2007 02:46 AM
2006 honda world news	webby	Garage	0	07-25-2005 09:31 AM

05-16-2007, 03:11 PM	#2 (permalink)
honda06si Senior Member Join Date: Sep 2006 Location: WV Posts: 11,150 justin iTrader: 6 / 100%	your profile says you drive an ex. but if you do drive an si. dont go with a lower octane, stick to the 91 or 93. you will notice the diffrence. and plus the cost diffrence to fill up with 87 compared to 91 is like $3....so give something up that you buy once a week for $3

05-16-2007, 03:15 PM	#4 (permalink)
r a y Senior Member Join Date: May 2007 Location: Chicago-land Age: 28 Posts: 1,391 Shareef Abdur Rahim iTrader: 0 / 0%	higher octane is required for high compression N/A motors (11.0:1 Si) If you use 87 you could experience pre-ignition/knocking and you're screwing up your motor from the inside.

05-16-2007, 03:19 PM	#5 (permalink)
*jpik2003* RAWRRR Join Date: May 2006 Location: Chicago Age: 20 Posts: 4,605 Jack iTrader: 0 / 0%	Is saving $2-3 really that important to you, that you'd be willing to risk damaging the engine?