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Old 26 Aug 2007, 01:54 pm
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Default Can I Use Regular Gas in my RSX Type S?

Hi Does anyone know if I can fill my tank with just regular gas or does it have to be Premium? I don't care much if the performance drops I only care if filling it with regular will damage the car in some way.ThanksAlso I forgot it is a 2003 model.
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Old 26 Aug 2007, 02:10 pm
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Sure, but you'll get poorer performance and less gas mileage. The net result will be that you won't save any money.
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Old 26 Aug 2007, 02:16 pm
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No, it won't damage your car in any way. You might see a slight drop in your gas mileage, and slightly diminished performance, but nothing permanent. One thing that might happen that is annoying is that some cars get a bit of an octane rattle from the lower octane. It will go away when you go back to higher octane premium fuel.
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Old 26 Aug 2007, 02:20 pm
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You might want to note your car is a higher compression and that's one of the reason for running higher octane. To prevent denotation.
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Old 26 Aug 2007, 02:28 pm
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Yes the Rsx Type S model does require 91 and up octane fuel. It's a high revving motor and the 91 octane helps the motor especially when I-VTEC is in use.
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Old 26 Aug 2007, 02:40 pm
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if you can't afford the gas for your car, you shouldn't own the car.I own a 2002 RSX-S...USE PREMIUM GAS.Using regular is not good for your car, otherwise they wouldn't tell you in your manual, or on your gas door to use PREMIUM GAS.
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Old 26 Aug 2007, 02:44 pm
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I also have an RSX-S and run nothing but 93 in it. It tells you specifically on the owners manual and the gas cap not to use anything other than premium fuel so why would you think it's in anyway good for the car? Like the other person said if you can't afford the extra 2$ it takes to fill up your tank then you shouldn't have the car. It will eventually cause detonation/knocking and f uck up your engine. Trust me a K20 runs about 4-5k which won't be covered under warranty upon inspection of what went wrong. Just suck it up and put the right gas into it.
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Old 26 Aug 2007, 02:46 pm
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I own a 2006 TL. I use regular gas in my car. I can afford the premium grade, I just refuse to pay .30 + cents more per gallon. I have not felt a difference between the two grades. Also, most new cars have knock sensors so it should not be damaging to your engine.where I live, gas is at 3.44 low grade, 3.66 mid and 3.74 premium. I would use premium if there was a 30 cents a gallon difference in performance.
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Old 26 Aug 2007, 02:48 pm
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I would not make a habit of running lower octane fuel in your car. True, knock sensors will adjust the engine timing to avoid detonation, but that comes at an expense. Aside from the loss of power, your engine will run rich, and you'll suffer from a greater than normal amount of carbon buildup & plug fouling. It's always best to use the fuel that the car was designed for.
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Old 26 Aug 2007, 02:54 pm
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no i wont damage the car but i would start putting in midgrade for a couple of tanks before dropping to regular and then i would run cleaner through the system on the last tank of midgrade on the fill up with regular...and use cleaner once every few fillups when you go to regular to maintain you lines
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