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Did you follow the break in procedure as per OWNER'a MANUAL?
Are you sure about the computations?
dan
So after 325 miles my 15.3 gallon tank took 12.8 with the pump nozzle on the auto setting. That's 25.4 mpg. So I had 60+ miles to go, not considering the racket in the passenger seat.
My passenger seat woke up one night at 2:00 AM, with the amber light on, and the needle below "E"... Next exit with an open gas station was 20 miles away, so I got to listen to it for quite awhile...
I did set a personal record that night.. 5 hrs,40 minutes.. 420 miles... with zero stops.. '99 Honda Accord 4-cylinder..
I've had higher average speeds, but never made it that far, or that amount of time, without stops for gas, food, etc..
regards,
kyfdx
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TB
If you are really seeing a difference in power going from 87 octane to 89 octane, take it back to the dealer and have them service it. The engine in the CR-V has no capability to extract more power from higher octane. The reason there are different grades of gasoline is because there are engines with different compression ratios. A similar engine in the Acura TSX which has 11:1 compression ratio will produce more power using 93 octane, and will revert to lower power production when lower octane fuel is used. CR-V has a low compression engine, 9.5:1 or something. It is just INCAPABLE of extracting more power out of higher octane fuel.
Octane rating is the "detonation" rating. Higher octane means that gasoline will not self ignite (detonate) prematurely. High octane gasoline in by itself has no more power than lower octane gasoline.
Save your money and use 87 octane gas.
For this tank i am going to stay under 70 and take it a little easier off the ramps when i can just to see what i could actually get for MPG if i really tried.
Should also mention that i only have about 1500 miles on this thing.
We recently took a trip in her 03 CR-V automatic,4wd. Overall the trip was as comfortable as it would have been in the Pilot, although a bit nosier partly due to the Bridgestone duellers. Filled up at the same pump both times and the trip yielded 30.7 MPG. This was in North Georgia and the road was either uphill or down hill with very little flat ground. Cruise was set at 2500 RPM which was about 67 mph.
She gets 19-21 around town and I get 23-25 on the same roads in the CR-V. I start off with a light foot so that the shifts at near 2,500 rpm. She starts off so that the rear dips down a little and the shifts at about 3500 rpm. I let off the gas when I see the stop ahead, she likes to run right up to it before letting off and has to use the brakes a lot harder.
When I see a stop sign ahead with cars waiting to proceed I begin to slow down so that hopefully I will have to stop only once. She runs right up behind the last car and has to start and stop several times. Different driving habits can make a significant difference in fuel mileage.
When a Pilot is delivered to the dealer there are several things the "GET READY" department is supposed to do. One is very important for fuel mileage. This one also needs to be done whenever the battery has been disconnected for any reason. I don't know if it applies to the CR-V, but it can't hurt anything to do it.
Below is how it is done as I remember it.
Be sure radio, DVD, lights, AC and every thing else is turned off.
With the car cold like it has been sitting for several hours, disconnect the battery. Wait a couple of minutes and re-connect it. Leave the hood up!
Start the car, let it idle. Do not touch the gas peddle for any reason. Get out and watch the radiator fan. It will eventually come on. Then it will shut off. A while later it will come on again. Let it idle for about 10 additional minutes after the fan turns off that 2nd time. It may or may not come on during that last 10 minutes.
Turn the ignition off. Now re start the car reset the radio and any other things that may have lost memory.
It is called the "Idle Learn Proceedure" and can be found here: http://www.hondalac.com/service/Bulletins/x02-029e.pdf
I don't understand why this procedure does anything other than help Idle, but it does.I got this from a Pilot forum and it helped cars that were getting terrible mileage. One soccer mom that was complaining about her mileage, got her husband to do the procedure and her mileage increased 5-6 MPG across the board and she started getting the same as the rest of us. Others had similar results.
Kip
22-23 would be more common for the average driver.
Try the above procedure and see what happens. At worse nothing will change. At best your mileage will increase.
Is your car an automatic?
Kip
Some peoples driving habits get better mileage than others. It is kind of a game with me to see where I can improve mileage.
Start off with just enough pressure on the pedal that the shifts will be at 2500-2800 rpm. Try to time the speed and distance to the stop signs and red lights to use very little brakes.
If there are cars waiting at the stop sign try to coast so that you get there after the last car is gone, so that you only stop and start once instead of several times.
When starting and stopping, pretend there is a very full open top cup of coffee sitting ON the tray between the seats and you don't want to spill it. "Jack Rabbit" starts and hard braking are murder on fuel mileage. Many folks don't realize the "Hard Braking" is a result of not letting off the gas soon enough, thus burning gas back there requiring hard breaking up here.
Obviously, sometimes things can't be avoided , like someone pulling out on front of you or that light changing. If we pay attention we can learn to anticipate someone pulling out and we can learn the pattern of how different traffic lights behave in relationship to each other on the route we take. Sometimes a little extra gas will get us to and through that next light so that we don't have to stop. Other times it is going to stop us no matter what we do, so why hurry to the next stop? It takes a lot more fuel to get that 3500# moving than it does to keep it moving. So learn your route!
Keep a distance of about a car length for every 10 MPH of speed. This allows us to keep a steady foot on the throttle instead of constantly on and off the gas and brake. We won't get there any quicker by riding someone's bumper.
On the highway, a trip of 300 miles will take 4 hours at 75MPH. It will take a half hour longer at 67 MPH. At 75 you can burn 2-3 more gallons of gas. 3-5 less MPG. $6-$9 more dollars at todays prices. That 4 cylinder engine has to work harder and harder as the speed of the CR-V or any SUV meets more and more wind resistance at higher speeds. If the 1/2 hour is that important, be prepared to pay for it, OR leave 1/2 hour earlier. At the slightly lower speed there will be a little less noise inside the car a few less maneuvering hassles and better mileage. You will arrive a little fresher.
It takes a lot more gas going up a hill than saved on the one you just went down. It saves some fuel if allowing a little extra speed toward the bottom of the hill so that you get a little more Coast up the next one. Cruise Control is wonderful on relatively flat ground, but in hilly country I tend to cancel it and just use a somewhat steady foot so that I increase the speed 5-6 MPH toward the bottom of the down hill and it will usually decrease the same amount going up the next.
Obviously we have to be considerate of drivers behind us. On two lane roads we have to be more cautious about varying our speeds than on 4 lane roads.
Tire pressure at about 2# more than recommended will help some. Be careful, because too much will cause the tires to wear more in the center treads and can also result is some loss of control because there is not as much tire patch on the pavement.
Doing the little things to increase fuel mileage can save us $$ in gas as well as savings on break jobs and tire replacement.
Does the A/C really need to be on? In todays cars the A/C compressors are pretty efficient. In most cases the A/C will use less fuel that having the windows open at highway speeds.(Less wind drag). However if the outside air is cool enough just turn on the fan to high and let nature cool you through the dash vents.
I believe you said you bought your car used. It is possible that the battery has been replaced, disconnected, or died, or that the dealer didn't do their job when new. The "Idle Procedure" above can and has resulted in big savings in fuel for Pilot owners. It may or may not do the same for the CR-V. It certainly is worth a try. If it is part of the new car get ready at the dealer it will need to be done again whenever the battery is disconnected, replaced, or has gone dead for any reason.
Kip
As per OWNER's MANUAL: (verbatim) "You should run your A/c once a week for 15 minutes to allow the oil lubricate the internals, EVEN IN WINTER MONTHS."
I wonder if all those with "sudden" A/c deaths followed the OWNER's MANUAL recommendation.
That is defogger, and yes, it does activate the A/c, unlees you have reprogrammed it otherwise (like I did).
I thought the reprogramming only turned off the light... or at least that is how it appeared when I read the procedure some time ago. I would not do this anyway; the dry air is what makes the window clear rapidly.
If you live in a very cold climate (below 32 F), the air would be dry enough without the A/C.
Not necessarily. What counts is the relative humidity and that can get up to 100% even in cold places - i.e. snow falls in cold places!
tidester, host
I've only had one AC compressor to be replaced. It was 4-6 years ago. That was on a 78 Chevy G20 van. Seems that 20+ years and 280,000+ miles had finally taken their toll.
As stated by others the AC compressor will usually run when "defrost" is selected. However on many newer cars the Compressor can be turned off while air still blows on the windshield. We use the defrost, here in Georgia, more in the winter than the summer.
I think that the mfg. tend to overstate most things in an effort to get us to comply to some degree approaching reality. They tell us to do something ever so often in the hopes that we will do it some. They ask for once a week, hoping we will do it once a month.
The dealers add insult to injury. They tell us that our 2 Hondas should have the oil changed every 3,750 miles or 3 months. "Whichever comes first" The book calls for every 7,500 miles except for "EXTREMELY" dusty conditions or heavy duty driving with lots of towing or heavy city driving. We do neither of the above. Yet the dealer insist it should be done. "BULL"
A few years back I read an article from "Mechanics Illustrated" or some such publication. They were monitoring the frequency of oil changes as well as brands of oil in major city taxi cabs.
They saw no more wear in engines changing oil and quality filters every 7000, 5000 or 3000 miles, with the same brand of Quality motor oil.
Kip
The manual describes SEVERE conditions not only as dusty or what not, but also the weather. If your temps get above 90°F or bellow 32°C you fall under SEVERE. If you do some stop and go, or drive shorter than 5-10 miles per trip, you fall under SEVERE. It is all in the OWNER's MANUAL.
Last time I was in Gerogia, it was HOT!!! They don't call Atlanta Hotlanta for nothing.
The offsetting factor we have is most of our gas is 10% ethanol, which has a negative effect on mileage. How much I'm not sure, though. I'm looking forward to that first 26+ mpg tank! I feel it coming!!!
Driving at speed limit (65 mph) on 15% ethanol gas (as per sticker on the pump) I got approx 29 mpg.
Driving at 70 mph in 65 on 15% ethanol gas I got 27 mpg
Driving at 80 mph in 65 on 15% ethanol gas I got 24 mpg
Last year when I made a similar trip using gasoline with MTBE I got over 30 mpg driving at speed limit.
This is a 2005 CR-V EX 5 man.
Last time I was in Georgia, it was HOT!!! They don't call Atlanta Hotlanta for nothing.
----------------------------------------
Gotta love it! Seems that it would be more honest of them to simply say to change the oil every 3750.
I haven't checked the owners manual, but I believe you are telling it like it is. Therefore basically they are saying that 90+++% of drivers are in the severe zone. :sick:
I would call the above conditions as NORMAL Driving. I don't know why they didn't add "If you ever drive over 60 or under 25 "YOU MIGHT BE A SEVERE DRIVER". If you ever encounter HILLS "YOU MIGHT BE A SEVERE DRIVER". :mad:
It does get hot in the Atlanta area. Worse part is the humidity. HOWEVER, the hottest I have ever been was in Cape May, New Jersey. And they have Mosquitoes the size of humming birds.
Kip
And you are right, there maybe a handfull of people who fall under the "Normal" conditions.
Gen. 1 had shorter oil change intervals. Gen. 2 have 5000 miles for severe, and 10,000 for normal.
However we don't have to challenge every stop sign or traffic light by accelerating right up to them before braking. We don't have to tailgate so that we are back and forth between the brake and throttle. We can judge our speed and try to match it to traffic speed before merging into traffic. Sometimes things just don't work out! Most of the time they will!
At 2500 RPM our 4 speed automatic, '03, with 4wd is running about 67 mph. How fast do the later model 4wd with the 5 speed automatics run at 2500 RPM?
Thanks,
Kip
Whatever you are doing is obviously working.
The 5 speed doesn't appear to be helping much in the way of miles per gallon. The 5 speeds seem to be getting about what our 4 speed gets. Although it should help with engine longevity!
I was hoping they would have worked it "INTO" the tranny gear ratios to get a bit better performance, say from 0 to 60. With our 4 speed the engine seems to drop off the POWER CURVE momentarily after each shift. Seems to be a second or two before the GROWL comes back.
Is your's a 4wd? Wondering if there is any difference between the 2WD and 4WD gearing!
Thanks,
Kip
1st 2.652
2nd 1.517
3rd 1.037
4th 0.738
5th 0.566
Reverse 2
Final Gear Ratio 4.438
1st 2.684
2nd 1.535
3rd 0.974
4th 0.638
Reverse 2
Final Gear Ratio 4.438
Thank you!
Looks like they did manage to work 5th into as well as onto the overall.
As the gears are closer together, it may be enough to stay on the "Growl" when a shift takes place.
I agree with you about the hilly stuff. Out 4spd will often drop back to 3rd on Xway Hills. Although the 5spd 5th would be more apt to downshift, it's 4th just might be just enough to keep from shifting down to 3rd, most of the time.
Kip
Actually, not taking a Honda engine to the redline is what shortens Honda engine's longevity. It is designed to be run at high RPM's.