where are you shifting to get optimum gas mileage?
where are you shifting to get optimum gas mileage?
As the subject states, where are you shifting to get optimum gas mileage? For my daily commute, I try to shift below 2300 rpms for every gear. My car still is not giving me great range on a full tank. I know there are many other factors that come into play with gas mileage, but I am only focused right now on the shifting.
Originally Posted by SteVTEC
dump the 18's and stereo equipment. 
shift at like 3- 3.5 this is the optiumum rpm range for cruising for the maxima.. below that you are probably running a little rich on acceleration.. above that the rpms is too fast to get good milage.
i average 22-24 mpg.
i average 22-24 mpg.
.......
Originally Posted by s3roush628
How much of that is highway driving? I get about 225 mpg on my auto with mostly city.
Not a whole lot of highway around here...so I don't know how your mileage is low. Do you drive aggressively? I do, but it's not that often.
Originally Posted by s3roush628
How much of that is highway driving? I get about 225 mpg on my auto with mostly city.
I dont top off though and try not to run it to low fuel light. Is there something wrong with my maxi?
Newbie - Just Registered
Joined: Oct 2000
Posts: 1,420
From: Poughkeepsie, NY
Originally Posted by PLUMMAXSE
Hell I did 100 in 3rd in mine? Guess the book doesn't mean that.
Originally Posted by nismos14
r u sure? i can't do 100 in 3rd in my 5 speed
[edit]Oh, yeah...I keep it between 2k and 3k when I'm being nice
[/edit]
. mobile 1 sythentic 5W/30 + OEM nissan filter + 91 octane.
Not DAVEB the parts guy
Joined: Aug 2000
Posts: 8,549
For those you that can go over 100mph in 3rd, either you're an automatic or your speedometer is off. It's impossible to any faster than ~96mph in 3rd with the stock rev limiter 
With my 7000rpm limiter, I can only do ~102mph in 3rd.
As for shift points and MPG, I shift my 1-2 at approximately 4000rpms, the 2-3 at ~3800rpms, and the 3-4 at approximately 3000rpms. A lot of the time I go directly from 2nd to 4th. I tend to play around in 2nd and 3rd quite a lot revving it to 5000-6000rpms a few times a day. I usually get 22mpg with 80% city and 20% highway. I usually get 26-27mpg in straight highway driving.
Dave
With my 7000rpm limiter, I can only do ~102mph in 3rd.As for shift points and MPG, I shift my 1-2 at approximately 4000rpms, the 2-3 at ~3800rpms, and the 3-4 at approximately 3000rpms. A lot of the time I go directly from 2nd to 4th. I tend to play around in 2nd and 3rd quite a lot revving it to 5000-6000rpms a few times a day. I usually get 22mpg with 80% city and 20% highway. I usually get 26-27mpg in straight highway driving.
Dave
Senior Member
Joined: Dec 2003
Posts: 501
I get between 300-350 on a tank of 91. And the way I do it is I skip gears. I start out in first or second, and shift to 4th or 5th gear. And don't floor it just give it a second and it gets there. And I just took the car for a spin and I did 100 in 3rd gear????
i used to get almost 400 for the tank with CAI and using mobil 1 synthetic shifting at 2800 or so, but now, after going to non-synthetic and gettin full exhaust and gettin a weird CEL 0305 i think, i barely get to 290, but the weather changed so i dont know what exactly caused it
I pride my self on gas mileage. Within the next few months I will be changing plugs/fuel filter, ripping out stock intake system with dirty air filter and replacing with clean franken car system, replacing stock b/y with aftermarket b/y and cleaning cat. Hopefully with that, and under regular driving, my range per tank will sky rocket. Right now I can get about 340miles (~550km) per fillup if I am lucky and take it right to the low-gas warning light.
Holy crap! I drove 265 miles recently..mostly highway and only used half a tank! I noticed this tonight when I went to the store tonight. Oh and BTW I have 2 codes for my SES light. So...265 x 2 = the other half of my tank is what..about 530 total? All I can say is wow.
Newbie - Just Registered
Joined: Oct 2000
Posts: 1,420
From: Poughkeepsie, NY
That's a very inaccurate way to measure mileage. Here's the best way:
Fill up; reset trip meter; drive a lot; Fill up
Take the mileage on the trip meter and divide by the number of gallons on the 2nd fillup.
If you're really hung up on accuracy, use the same pump for both fillups.
Fill up; reset trip meter; drive a lot; Fill up
Take the mileage on the trip meter and divide by the number of gallons on the 2nd fillup.
If you're really hung up on accuracy, use the same pump for both fillups.
Not DAVEB the parts guy
Joined: Aug 2000
Posts: 8,549
Originally Posted by sryth
What makes you say that?
At 6500rpms:
1st 37mph
2nd 66mph
3rd 97mph
4th 129mph
5th 153mph
http://www.boostaholic.com/maxima/dyno/shiftpoints.html
Dave
Not DAVEB the parts guy
Joined: Aug 2000
Posts: 8,549
Originally Posted by Phatmax98
Holy crap! I drove 265 miles recently..mostly highway and only used half a tank! I noticed this tonight when I went to the store tonight. Oh and BTW I have 2 codes for my SES light. So...265 x 2 = the other half of my tank is what..about 530 total? All I can say is wow.
Dave
Originally Posted by Dave B
I wouldn't put much faith in measuring that way. The gauge is slow to react. I'm currently at 120 miles and have only used a 1/4 tank. I know for a fact that my car will not be getting 480+ miles on a tank.
Dave
Dave
Yeah..the best I have actually got was around 400 on a fillup...but it's nice to dream
Newbie - Just Registered
Joined: Oct 2000
Posts: 1,420
From: Poughkeepsie, NY
Originally Posted by Dave B
It's a pretty easy calculation. Every 1000rpms in 3rd gear equals 14.9mph. 14.9mph times 6.5 (the stock 6500rpm rev limiter) equals a maximum speed of 96.85mph in 3rd gear. It's impossible to go any faster in 3rd without a raised rev limiter.
At 6500rpms:
1st 37mph
2nd 66mph
3rd 97mph
4th 129mph
5th 153mph
http://www.boostaholic.com/maxima/dyno/shiftpoints.html
Dave
At 6500rpms:
1st 37mph
2nd 66mph
3rd 97mph
4th 129mph
5th 153mph
http://www.boostaholic.com/maxima/dyno/shiftpoints.html
Dave
As for the speed, I get different numbers. Again, it all depends on tire inflation.
Code:
F 3.823 Input Axle Tire: 215 55 16 1 3.285 0.304 0.080 Height: 25.31 2 1.85 0.541 0.141 Circumference: 79.52 3 1.272 0.786 0.206 4 0.954 1.048 0.274 5 0.795 1.258 0.329 R 3.482 0.287 0.075 Axle Revolutions 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 6550 1 80 119 159 199 239 279 319 358 398 438 478 518 522 2 141 212 283 353 424 495 566 636 707 778 848 919 926 3 206 308 411 514 617 720 823 925 1028 1131 1234 1337 1347 4 274 411 548 685 823 960 1097 1234 1371 1508 1645 1782 1796 5 329 494 658 823 987 1152 1316 1481 1645 1810 1974 2139 2155 R 75 113 150 188 225 263 300 338 376 413 451 488 492 Wheel Speed 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 6550 1 6.00 8.99 11.99 14.99 17.99 20.99 23.98 26.98 29.98 32.98 35.98 38.97 39.27 2 10.65 15.97 21.29 26.62 31.94 37.26 42.59 47.91 53.23 58.56 63.88 69.20 69.74 3 15.48 23.23 30.97 38.71 46.45 54.20 61.94 69.68 77.42 85.17 92.91 100.65 101.43 4 20.65 30.97 41.29 51.62 61.94 72.26 82.59 92.91 103.23 113.55 123.88 134.20 135.23 5 24.78 37.16 49.55 61.94 74.33 86.71 99.10 111.49 123.88 136.27 148.65 161.04 162.28 R 5.66 8.49 11.31 14.14 16.97 19.80 22.63 25.46 28.28 31.11 33.94 36.77 37.05
Senior Member
Joined: Jun 2002
Posts: 733
why does it depends on tire inflation? Are you guys refering to the actual speed the car is going or just what the speedo says? If your saying actual speed, then yeah I see where tire inflation/size comes into play but that would still be an inaccurate equation unless you measured the tires circumfrence when its spinning because I think the tires would balloon a little depending on the rpm.