Few questions about my new SI
08-Oct-2010, 10:24 AM
#1
Junior Member
Thread Starter
Join Date: Oct 2010
Posts: 20
Few questions about my new SI
Hey guys I purchased an 08' SI yesterday and just had a few small questions to ask you peeps.
So it says 91 octane reccommended. I just filled up 1/2 the tank with 94 today. Whats the best choice? Im guessing 87 is not a good idea.
Also oil changes, looks like the dealer just changed it its pretty clean. How many km's is reccommended for a change? Also should i switch to Synthetic?
The car currently has 12K on it. Sorry these questions are probably stupid but it says little about them in the users manual.
Thanks
So it says 91 octane reccommended. I just filled up 1/2 the tank with 94 today. Whats the best choice? Im guessing 87 is not a good idea.
Also oil changes, looks like the dealer just changed it its pretty clean. How many km's is reccommended for a change? Also should i switch to Synthetic?
The car currently has 12K on it. Sorry these questions are probably stupid but it says little about them in the users manual.
Thanks
08-Oct-2010, 11:01 AM
#2
Inactive
Join Date: Sep 2007
Location: Where my car is.
Posts: 5,460
Hey guys I purchased an 08' SI yesterday and just had a few small questions to ask you peeps.
So it says 91 octane reccommended. I just filled up 1/2 the tank with 94 today. Whats the best choice? Im guessing 87 is not a good idea.
-Just run 91 as recommended. There is no benefit or performance gain with 94. And don't run 87 or 89.
Also oil changes, looks like the dealer just changed it its pretty clean. How many km's is reccommended for a change? Also should i switch to Synthetic?
-It should say in the owners manual how often they recommend you change the oil. It should also say what type of oil they recommend to use. Your k20 engine will benefit from the advatages of synthetic oil, so imo, I'd use synthetic. Just keep in mind, synthetic oil allows for much longer oil change intervals as well.
The car currently has 12K on it. Sorry these questions are probably stupid but it says little about them in the users manual.
Thanks
So it says 91 octane reccommended. I just filled up 1/2 the tank with 94 today. Whats the best choice? Im guessing 87 is not a good idea.
-Just run 91 as recommended. There is no benefit or performance gain with 94. And don't run 87 or 89.
Also oil changes, looks like the dealer just changed it its pretty clean. How many km's is reccommended for a change? Also should i switch to Synthetic?
-It should say in the owners manual how often they recommend you change the oil. It should also say what type of oil they recommend to use. Your k20 engine will benefit from the advatages of synthetic oil, so imo, I'd use synthetic. Just keep in mind, synthetic oil allows for much longer oil change intervals as well.
The car currently has 12K on it. Sorry these questions are probably stupid but it says little about them in the users manual.
Thanks
12k eh? Just a baby...hehe. Not even broken-in yet.
08-Oct-2010, 04:36 PM
#4
Junior Member
Thread Starter
Join Date: Oct 2010
Posts: 20
Ya i love meets 
here it is.
Its literally not a scratch on it inside and out. Its like some1 just kept it in there garage for two years. I can't get over it.
22K on the road it cost me. I think the MSRP in 08 was 27K so i think i did alright.
here it is.
Its literally not a scratch on it inside and out. Its like some1 just kept it in there garage for two years. I can't get over it.
22K on the road it cost me. I think the MSRP in 08 was 27K so i think i did alright.
. May you be happy with it, and 
!!
10-Oct-2010, 12:57 PM
#7
Junior Member
Thread Starter
Join Date: Oct 2010
Posts: 20
lol thanks purple.
OK *update!
I checked the owners manual and it just goes by the "oil life meter". Says to change it when it reaches below 20% oil life. No km figures! This must of been made for freakin idoits lol.
mines at 100% so far.
OK *update!
I checked the owners manual and it just goes by the "oil life meter". Says to change it when it reaches below 20% oil life. No km figures! This must of been made for freakin idoits lol.
mines at 100% so far.
10-Oct-2010, 10:57 PM
#8
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Join Date: Apr 2002
Location: Hamilton
Posts: 6,647
I had an 06 Si and I have an 07 Si now. My 07 has 105,000 trouble free kms. The interior plastics scratch and scuff pretty easy and the fabric on the seats wears out fast, but otherwise its a great car.
91 is all it needs. Putting in anything higher is a waste of $ and wont benefit anything. Ive even put 87 into it on occasion and it doesnt really run any differently.
Oil changes I follow the maintenance minder. When you get to 15%-20% its usually around 7-8000ks anyway so its pretty accurate. The codes of numbers and letters recommend other services (filters, tire rotations, etc) but I just do stuff on a more normal basis.
Synthetic isnt needed, but I found that when I did use synthetic, the car would get about 50km further to a tank. More importantly though it ran much smoother during the winter months with the synthetic.
3 things I would recommend would be ditching the stock Michelin tires. They suck in the dry, wet, snow, everywhere lol.
I would also suggest changing the transmission fluid to a full synthetic like Amsoil, Royal Purple, Redline, Motul, etc. Amosil being the most popular with other Si owners. The 6sp can be very fussy and alot of people with earlier (06-07) have reported problems. Mine shifts like butter, but in the winter the shifter can be a little stiff and the synth fluid smooths it out alot.
And finally
8th Generation Honda Civic Forum
Any specific questions feel free to ask.
My wifes old 06
http://img.photobucket.com/albums/v9...i/IMG_0017.jpg
My current 07
http://img.photobucket.com/albums/v9...i/newSi011.jpg
Lol. I even had an 06 EX back in 2005 when they first came out.
http://img.photobucket.com/albums/v9...carpics001.jpg
91 is all it needs. Putting in anything higher is a waste of $ and wont benefit anything. Ive even put 87 into it on occasion and it doesnt really run any differently.
Oil changes I follow the maintenance minder. When you get to 15%-20% its usually around 7-8000ks anyway so its pretty accurate. The codes of numbers and letters recommend other services (filters, tire rotations, etc) but I just do stuff on a more normal basis.
Synthetic isnt needed, but I found that when I did use synthetic, the car would get about 50km further to a tank. More importantly though it ran much smoother during the winter months with the synthetic.
3 things I would recommend would be ditching the stock Michelin tires. They suck in the dry, wet, snow, everywhere lol.
I would also suggest changing the transmission fluid to a full synthetic like Amsoil, Royal Purple, Redline, Motul, etc. Amosil being the most popular with other Si owners. The 6sp can be very fussy and alot of people with earlier (06-07) have reported problems. Mine shifts like butter, but in the winter the shifter can be a little stiff and the synth fluid smooths it out alot.
And finally
8th Generation Honda Civic Forum
Any specific questions feel free to ask.
My wifes old 06
http://img.photobucket.com/albums/v9...i/IMG_0017.jpg
My current 07
http://img.photobucket.com/albums/v9...i/newSi011.jpg
Lol. I even had an 06 EX back in 2005 when they first came out.
http://img.photobucket.com/albums/v9...carpics001.jpg
12-Oct-2010, 02:24 PM
#9
Junior Member
Thread Starter
Join Date: Oct 2010
Posts: 20
wow thanks for the help man! That pretty much explains everything i needed to know.
Im switching to Amsoil Synthetic Tranny fluid on thursday. I think i know what others are talking about even tho it shifts smoothly the occasional below 3krpm upshift is a little rough when cold.
I kinda like the stock tires but ive been driving beaters for so long i prob forget what good tires actually feel like lol.
Oh and 8thcivic.com ever since you've posted this i've been on there its SO GOOD!!! so much info its crazy they have everything!
Nice rides! I like your wifes skirt (on her car i mean! ) Looks nice in white too
Im switching to Amsoil Synthetic Tranny fluid on thursday. I think i know what others are talking about even tho it shifts smoothly the occasional below 3krpm upshift is a little rough when cold.
I kinda like the stock tires but ive been driving beaters for so long i prob forget what good tires actually feel like lol.
Oh and 8thcivic.com ever since you've posted this i've been on there its SO GOOD!!! so much info its crazy they have everything!
Nice rides! I like your wifes skirt (on her car i mean!
) Looks nice in white tooI had an 06 Si and I have an 07 Si now. My 07 has 105,000 trouble free kms. The interior plastics scratch and scuff pretty easy and the fabric on the seats wears out fast, but otherwise its a great car.
91 is all it needs. Putting in anything higher is a waste of $ and wont benefit anything. Ive even put 87 into it on occasion and it doesnt really run any differently.
Oil changes I follow the maintenance minder. When you get to 15%-20% its usually around 7-8000ks anyway so its pretty accurate. The codes of numbers and letters recommend other services (filters, tire rotations, etc) but I just do stuff on a more normal basis.
Synthetic isnt needed, but I found that when I did use synthetic, the car would get about 50km further to a tank. More importantly though it ran much smoother during the winter months with the synthetic.
3 things I would recommend would be ditching the stock Michelin tires. They suck in the dry, wet, snow, everywhere lol.
I would also suggest changing the transmission fluid to a full synthetic like Amsoil, Royal Purple, Redline, Motul, etc. Amosil being the most popular with other Si owners. The 6sp can be very fussy and alot of people with earlier (06-07) have reported problems. Mine shifts like butter, but in the winter the shifter can be a little stiff and the synth fluid smooths it out alot.
And finally
8th Generation Honda Civic Forum
Any specific questions feel free to ask.
My wifes old 06
http://img.photobucket.com/albums/v9...i/IMG_0017.jpg
My current 07
http://img.photobucket.com/albums/v9...i/newSi011.jpg
Lol. I even had an 06 EX back in 2005 when they first came out.
http://img.photobucket.com/albums/v9...carpics001.jpg
91 is all it needs. Putting in anything higher is a waste of $ and wont benefit anything. Ive even put 87 into it on occasion and it doesnt really run any differently.
Oil changes I follow the maintenance minder. When you get to 15%-20% its usually around 7-8000ks anyway so its pretty accurate. The codes of numbers and letters recommend other services (filters, tire rotations, etc) but I just do stuff on a more normal basis.
Synthetic isnt needed, but I found that when I did use synthetic, the car would get about 50km further to a tank. More importantly though it ran much smoother during the winter months with the synthetic.
3 things I would recommend would be ditching the stock Michelin tires. They suck in the dry, wet, snow, everywhere lol.
I would also suggest changing the transmission fluid to a full synthetic like Amsoil, Royal Purple, Redline, Motul, etc. Amosil being the most popular with other Si owners. The 6sp can be very fussy and alot of people with earlier (06-07) have reported problems. Mine shifts like butter, but in the winter the shifter can be a little stiff and the synth fluid smooths it out alot.
And finally
8th Generation Honda Civic Forum
Any specific questions feel free to ask.
My wifes old 06
http://img.photobucket.com/albums/v9...i/IMG_0017.jpg
My current 07
http://img.photobucket.com/albums/v9...i/newSi011.jpg
Lol. I even had an 06 EX back in 2005 when they first came out.
http://img.photobucket.com/albums/v9...carpics001.jpg
19-Oct-2010, 11:03 PM
#10
Guest
Join Date: Aug 2010
Posts: 14
You will love your car and they love mods.. Just tuned a 2006 Si with Vibrant Header, K-Tuned Intake, High Flow Cat and a 2.5" exhaust and the damn thing made 227hp with a tuned Flashpro. The power you can make over the stock ECU is just crazy.
30-Oct-2010, 10:18 AM
#11
I just sent my oil away for analysis. There's a company called Black Stone Labs in the the States that will tell you everything you need to know about your oil.
Synthetic is better for the winters, I to use Amsoil. I used royal purple and my engine blew up ($8800 later). I highly doubt it was from the oil, but it leaves a very bad taste in my mouth.
I use Motul in my Rear diff. P90A it's mineral so not a synthetic, and I use Motul Synthetic for the transmission.
Of course your shifting will be 'sucky' when it's cold. The Viscosity of the oil is thick and slow moving until it's at proper tempature.
I run 94 Octane, though my car is tuned for 91. I fear that some stations have a bad quality of 91, then my car blows up, again. The higher the octane the higher it's detination point. That's why high compression engines (like yours) use 91. However, you have what's called a Knock sensor to retard your engine.
a Knock is a detination inside the cylinder(Too much preassure/heat your gas explodes inside your engine). So if you use the wrong gas, your engine might knock or sense knock and retard your timing.? (I'm pretty sure it's the timing, Martin or Mike will correct me lol)
Sorry for my wordiness, trying to explain why for what.
-B
Synthetic is better for the winters, I to use Amsoil. I used royal purple and my engine blew up ($8800 later). I highly doubt it was from the oil, but it leaves a very bad taste in my mouth.
I use Motul in my Rear diff. P90A it's mineral so not a synthetic, and I use Motul Synthetic for the transmission.
Of course your shifting will be 'sucky' when it's cold. The Viscosity of the oil is thick and slow moving until it's at proper tempature.
I run 94 Octane, though my car is tuned for 91. I fear that some stations have a bad quality of 91, then my car blows up, again. The higher the octane the higher it's detination point. That's why high compression engines (like yours) use 91. However, you have what's called a Knock sensor to retard your engine.
a Knock is a detination inside the cylinder(Too much preassure/heat your gas explodes inside your engine). So if you use the wrong gas, your engine might knock or sense knock and retard your timing.? (I'm pretty sure it's the timing, Martin or Mike will correct me lol)
Sorry for my wordiness, trying to explain why for what.
-B
31-Oct-2010, 10:53 PM
#12
Junior Member
Thread Starter
Join Date: Oct 2010
Posts: 20
^thats some great info posted thanks F8i and Marc.
Im not really looking to mod I want to keep the car stock. maybe in intake next year and upgraded sound system thats about it.
I changed the trans fluid to GM synchromesh since it was the only thing I could find around me. And only running 91oct but i normally visit gas stations that have alot of traffic. I can see 91 sitting around for a while or using questionable gas station brands could result in greater chances of bad gas.
So far so good!
The only problem now is a creak in the middle dash over small bumps but no biggie. everything else is showroom cond.
Im not really looking to mod I want to keep the car stock. maybe in intake next year and upgraded sound system thats about it.
I changed the trans fluid to GM synchromesh since it was the only thing I could find around me. And only running 91oct but i normally visit gas stations that have alot of traffic. I can see 91 sitting around for a while or using questionable gas station brands could result in greater chances of bad gas.
So far so good!
The only problem now is a creak in the middle dash over small bumps but no biggie. everything else is showroom cond.
31-Oct-2010, 11:37 PM
#13
Senior Member
Join Date: Sep 2007
Location: Pfaff
Posts: 1,560
^thats some great info posted thanks F8i and Marc.
Im not really looking to mod I want to keep the car stock. maybe in intake next year and upgraded sound system thats about it.
I changed the trans fluid to GM synchromesh since it was the only thing I could find around me. And only running 91oct but i normally visit gas stations that have alot of traffic. I can see 91 sitting around for a while or using questionable gas station brands could result in greater chances of bad gas.
So far so good!
The only problem now is a creak in the middle dash over small bumps but no biggie. everything else is showroom cond.
Im not really looking to mod I want to keep the car stock. maybe in intake next year and upgraded sound system thats about it.
I changed the trans fluid to GM synchromesh since it was the only thing I could find around me. And only running 91oct but i normally visit gas stations that have alot of traffic. I can see 91 sitting around for a while or using questionable gas station brands could result in greater chances of bad gas.
So far so good!
The only problem now is a creak in the middle dash over small bumps but no biggie. everything else is showroom cond.
I wouldn't put GM synchromesh in a bran new honda transmission. I only recommend using Honda MTF at my shop for honda/acura's.
The creak is warrant-able if you go back to the dealership.
01-Nov-2010, 08:25 AM
#14
+1 with Chris, Only use Honda MTF.
-B
01-Nov-2010, 10:58 AM
#15
Inactive
Join Date: Sep 2007
Location: Where my car is.
Posts: 5,460
+2 for Honda MTF!!! 
About the knocking, yes. Basically detonation is when the fuel/air ignites before it is supposed to. This is generally quite hard on an engine as the fuel is igniting while the piston is at full velocity during it's upward motion on the compression stroke. Studdenly being hit by a huge force in the other direction is not good as you can imagine. Knock sensors are designed to detect even the slightest amount of pre-ignition or detonation and it adjusts the timing accordingly to prevent it from causing damage.
About the knocking, yes. Basically detonation is when the fuel/air ignites before it is supposed to. This is generally quite hard on an engine as the fuel is igniting while the piston is at full velocity during it's upward motion on the compression stroke. Studdenly being hit by a huge force in the other direction is not good as you can imagine. Knock sensors are designed to detect even the slightest amount of pre-ignition or detonation and it adjusts the timing accordingly to prevent it from causing damage.
01-Nov-2010, 01:23 PM
#16
Junior Member
Thread Starter
Join Date: Oct 2010
Posts: 20
^Honda MTF.
Isn't that what they would of used orig from the factory?
I had 3rd gear pop out twice in the 1st week i owned it. changed to GM synchro never happened again. And its definitely smoother shifting as well.
I dont know if i want them taking apart my whole dash trying to locate this. Its not really a big deal or loud for that matter. I think im going to leave it be. Not a fan of other people touching my car or taking apart the dashboard and putting it back together! :S
I do have Warranty valid till Aug 11' though.
Isn't that what they would of used orig from the factory?
I had 3rd gear pop out twice in the 1st week i owned it. changed to GM synchro never happened again. And its definitely smoother shifting as well.
The creak is warrant-able if you go back to the dealership.
I do have Warranty valid till Aug 11' though.
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