Gasoline for RSX type S?

[minui]

Just bought an RSX type S and I'm not sure what kind of gasoline to put in it.

The manual recommends Premium, but I'm wondering if a type S would be susceptible to engine knock if I were to just use Regular.

Any type S drivers here use anything less than premium without any problems?

Thanks

[adam c]

Premium

and yes you can get engine knock with regular

[Cooked Rice]

Just run husky or mohawk 90 if you can't afford premium anywhere else. husky and mohawk are 90/92/94 because it's ethanol blend. Their 90 is the same price as shell 87 etc...

[schocker]

The manual says premium so use that.

[buh_buh]

It won't knock. There's probably a knock sensor, so if even if it did, it would just pull timing and your car will feel slower. I'd use mid-grade.

[Skyline_Addict]

why would you decide to cheap out on gas after getting a car that you know takes premium? put premium in, as the manual says.

[chkolny541]

has anyone ever had a case of a mechanical failure or "engine knock" that has been DIRECTLY caused by the octane rating of the fuel they use? i kinda doubt it
'


but on the flip side, isnt a tank of premium vs reg like 3 or 4$ more

[Pollywog]

Originally posted by Cooked Rice
Just run husky or mohawk 90 if you can't afford premium anywhere else. husky and mohawk are 90/92/94 because it's ethanol blend. Their 90 is the same price as shell 87 etc...

To my understanding, the net fuel efficiency loss with an ethanol blend outweighs that of the extra cost of premium. I say pay for premium, or buy something with a lower-compression motor.

"The energy content of ethanol is about 30-35% less (per volume) than gasoline..."

and here's a link to another article: http://www.slate.com/id/2122961/


Sorry, I know this isn't a thread about Ethanol.

Originally posted by chkolny541
has anyone ever had a case of a mechanical failure or "engine knock" that has been DIRECTLY caused by the octane rating of the fuel they use? i kinda doubt it

Yes, to answer your question. When you start playing with higher compression ratio's and boost it especially becomes that much more noticable. While I havn't personally had mechanical failure due to it, I most definatly have experienced knocking trying to be cheap at the pump.

[Criticull]

If the regular to premium spread is 10 cents, you're gonna pay $4.50 more for premium per tank. If you're on a tank a week, that's under $250 a year.

You probably don't need to cheap out. Cheap out in other ways like selling parts of the car that you don't think it needs (i.e. the back windshield wiper) lol.

The knock sensor probably covers you somewhat, but why risk it?

[minui]

Originally posted by Skyline_Addict
why would you decide to cheap out on gas after getting a car that you know takes premium? put premium in, as the manual says.

I'm actually running it on premium right now.
It's not that I'm trying to cheap out, I just want to make sure I'm not unnecessarily purchasing premium.

I owned a 03 celica a while back, and it also says to put premium in. I ran it on regular for 2 years with no problems.

But I know the compression on a type S is going to be higher than on a celica, which is why I ask.

I have no problems with running Premium, just thought I'd ask

Thanks for the inputs

[Pollywog]

Enjoy the new ride!

[minui]

Thanks everyone

[texasnick]

K20A2
Found in:
2002-2004 Acura RSX Type-S and 2002-2005 Honda Civic Type R (EP, European)
Displacement: 1998 cc
Compression: 11.0:1
Power: 200 hp (147 kW) @ 7400 rpm
Torque: 142 ft·lbf (193 N·m) @ 6000 rpm
Redline: 8200 rpm


K20Z1
Found in:
2005-2006 Acura RSX-S
Displacement: 1998 cc
Compression: 11.0:1
Power: 201 hp (150 kW) @ 7800 rpm (sae NET Rev 8/04)
Torque: 140 ft·lbf (194 N·m) @ 7000 rpm (sae NET Rev 8/04)
Redline: 8200 rpm

[Pollywog]

Originally posted by texasnick
K20A2
Found in:
2002-2004 Acura RSX Type-S and 2002-2005 Honda Civic Type R (EP, European)
Displacement: 1998 cc
Compression: 11.0:1
Power: 200 hp (147 kW) @ 7400 rpm
Torque: 142 ft·lbf (193 N·m) @ 6000 rpm
Redline: 8200 rpm


K20Z1
Found in:
2005-2006 Acura RSX-S
Displacement: 1998 cc
Compression: 11.0:1
Power: 201 hp (150 kW) @ 7800 rpm (sae NET Rev 8/04)
Torque: 140 ft·lbf (194 N·m) @ 7000 rpm (sae NET Rev 8/04)
Redline: 8200 rpm

And what inspired you to post this? We know its a high-compression engine, regardless of the year.

[nj2Type-S]

enjoy your type-s. i miss mine, lol.

[dimi]

I've run mid grade on my S2000, without any negative effects. 11.0 compression. I still run premium but at this altitude mid grade would be more than enough.

[texasnick]

Originally posted by Pollywog


And what inspired you to post this? We know its a high-compression engine, regardless of the year.

I was just posting CR of the motor as sort of a hint. If your engine is utilizing 11.0:1 CR and it redlines at 8,200 RPM WITH a 50 degree VTC, you are going to want to use good gas. That's all. Just trying to help out, and I posted both because the OP never specified what year Type S he was talking about. I'd say it's more on topic than your little getup about ethanol

...and to the people not using premium in an 11.0:1 motor

[alloroc]

Originally posted by chkolny541
has anyone ever had a case of a mechanical failure or "engine knock" that has been DIRECTLY caused by the octane rating of the fuel they use? i kinda doubt it
'


but on the flip side, isnt a tank of premium vs reg like 3 or 4$ more

If you can call broken rings and a hole in the piston mechanical failure, then yes I have.

[dimi]

Originally posted by texasnick


I was just posting CR of the motor as sort of a hint. If your engine is utilizing 11.0:1 CR and it redlines at 8,200 RPM WITH a 50 degree VTC, you are going to want to use good gas. That's all. Just trying to help out, and I posted both because the OP never specified what year Type S he was talking about. I'd say it's more on topic than your little getup about ethanol

...and to the people not using premium in an 11.0:1 motor

3500 ft altitude man. You think that doesn't make a difference?

[buh_buh]

I'm not using premium on my 11.5:1 motor, and my butt dyno thinks it feels slightly quicker, while my wallet says its definitely cheaper. Altitude definitely makes the difference.