The dealer said I do, but can I get away at least with 89 Octane?|||This is what my Acura dealer said last year when I bought my '09 MDX sport, "You paid for 300 horses, so if you want to experience that, use premium." They said you *could* put regular in, but you'll see a decrease in power and MPG. Use premium...It's only a couple bucks more per fill up.
JetDoc - The '09 MDX engine is actually a little different than what you linked to. The '09 has a compression ratio of 11.0:1, which most definitely needs premium still. They tweaked the engine for the 2010MY :)
http://www.acura.com/Engine.aspx?model=M鈥?/a>|||I would stick with 91 or above octane,especially in an MDX.They be pretty high tech,motors got compensator's here there and everywhere.You go below 91,these compensator's are going,to be
working overtime..Forget what these other,people are telling you..DO your own check.Book your car
onto a DYNO,drain fuel %26amp; put 1 gal of low octane,fuel in make sure they hook up the Emissions,
tester to the exhaust %26amp; let it run..Then repeat with high grade,or premium fuel %26amp; see the HUGE,
difference between the two..Sure if you can afford MDX,you can afford to get good fuel for it.
The very best of luck to you.Be well,happy %26amp; safe.|||Note RE Pablo's Answer Related to Octane Not Important to Power Output...
That's not true. Higher octane fuel prevents detonation / pre-ignition. This comes into play with high compression, normaly aspirated and forced induction (i.e., supercharged %26amp; turbocharged) engines. It also becomes an issue under high ambient temperatures.
Modern engine control modules working in concert with an engine's 'knock sensor' will adjust to retard the ignition timing when a detonation condition arises, this to avoid damage to the motor. And so it's this design configuration that reduces power output when lower octane fuels are used in particularly high compression engines such as with Honda's J35 %26amp; J37 motors found in the MDX.
Therefore, running 87 octane will reduce horsepower in the MDX, and the motor may seem a bit sluggish, though losses could be imperceptible depending upon your driving habits. Best to stick with the specified 91 octane fuel whenever possible.|||There are very few automobiles sold in the USA today that actually require premium grade gasoline. Unfortunately, your's is one of them. The MDX engine has a 11.2:1 compression ratio that needs the higher octane fuel to run properly.|||You could opt for a lower grade if you're okay with messing with the valvetrain over time. come on man, you spent good money for that MDX, are you saying you can't afford to pony up an extra 10-20 cents per gallon?|||As in any very expensive luxury car, only use the highest octane possible. And never buy gas from something like 'Pop's Gas' Should you not, you are going to build up so much sludge on your valves it'll run like a Smart Car!!|||If theres a sticker in the fuel door that says PREMIUM GASOLINE ONLY or something similar, it needs higher than 87, in my personal experience, 89 has always been fine.|||Octane rating won't harm or help your car either way. You will be fine to use either type in.
Why? Becuase all octane does is tweak the point of ignition for the air/fuel mixture.
MYTH: Higher octane give me better gas milage
FACT: Using lower octane rated fuel in a car that is designed for higher octane AND HAS KNOCK SENSORS will seem like it's getting worse gas mileage because the lower octane fuel will make the car retard it's timing to compensate. This translates to less mileage, as you are going to push the pedal a little farther to get the same effect. It's not burning more gas, you're just using more gas.
MYTH: I get more power with high octane
FACT: Same as above, really. When you use the proper octane rated fuel for your car, your car will be running at optimum timing and delivery, etc, seeming like a boost in power. In reality, you're just not pushing the pedal as far to get the same performance as a lower octane. It's not the gas that's causing the lag, it's the computer, and you.
This said, it doesn't matter one bit which octane you use, as far as harming the car goes. Make sense?
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment