Gas mileage tips!
#1
Gas mileage tips!
Hey guys I looked in the stickies and didn't find anything on on gas mileage. I just wanted to get everyones opinion on gas mileage tips. I know one is to have proper presure in the tires. I want to maximize my mpg. Please post your gas mileage tips.
#2
This is discussed on a regular basis in either the 4th GEN or 5th Gen Forums.
Tire pressure
Premium gas
Regular oil & filter changes
Air Filter
Fuel Filter
Cruise Control
Light foot
Chevron Techron before oil change
No air conditioning
Roll windows up
New PCV valve if engine hesitates
Transmission fluid
etc. etc.
Tire pressure
Premium gas
Regular oil & filter changes
Air Filter
Fuel Filter
Cruise Control
Light foot
Chevron Techron before oil change
No air conditioning
Roll windows up
New PCV valve if engine hesitates
Transmission fluid
etc. etc.
#5
Yes, also known as throttle response. This can also be remedied by cleaning the throttle body with throttle body cleaner as outlined in the stickies or motorvate.ca.
Some .orgers have switch to a 300ZX filter which does not improve fuel economy. Since its larger you can go further before changing it.
Transmission fluid and fuel filters should be replaced every 30K. That is also the recommended replacement interval for replacing air filter but I've never been able to get that many miles out of one. I've since switched to a K&N panel air filter which may have improved my fuel economy modestly. Synthetic oil apparently benefits fuel economy but I haven't switched to it - I put too few miles on my Maxima to justify it.
Some .orgers have switch to a 300ZX filter which does not improve fuel economy. Since its larger you can go further before changing it.
Transmission fluid and fuel filters should be replaced every 30K. That is also the recommended replacement interval for replacing air filter but I've never been able to get that many miles out of one. I've since switched to a K&N panel air filter which may have improved my fuel economy modestly. Synthetic oil apparently benefits fuel economy but I haven't switched to it - I put too few miles on my Maxima to justify it.
#6
According to the Haynes manual, another culprit can be the emissions system not functioning properly. See the stickies for checking/cleaning the EGR valve and of course faulty 02 sensors contribute to poor fuel economy.
An application of SeaFoam through the brake booster hose cleans out the intake manifold which would likely help fuel economy.
An application of SeaFoam through the brake booster hose cleans out the intake manifold which would likely help fuel economy.
#7
Thanks that is very good information. The reason I ask is I was getting 325 to a tank city driving now I get maybe 300. It all happened when I put a CAI and a full cattman exhaust. I thought that would make my mileage better. My A/C definately works better because of the exhaust. weird. I was really into the petal at first with all that extra power but now im back to my regular driving habits.
#10
Originally Posted by rmurdoch
This is discussed on a regular basis in either the 4th GEN or 5th Gen Forums.
Tire pressure
Premium gas
Regular oil & filter changes
Air Filter
Fuel Filter
Cruise Control
Light foot
Chevron Techron before oil change
No air conditioning
Roll windows up
New PCV valve if engine hesitates
Transmission fluid
etc. etc.
Tire pressure
Premium gas
Regular oil & filter changes
Air Filter
Fuel Filter
Cruise Control
Light foot
Chevron Techron before oil change
No air conditioning
Roll windows up
New PCV valve if engine hesitates
Transmission fluid
etc. etc.
#11
Originally Posted by rmurdoch
This is discussed on a regular basis in either the 4th GEN or 5th Gen Forums.
Tire pressure
Premium gas
Regular oil & filter changes
Air Filter
Fuel Filter
Cruise Control
Light foot
Chevron Techron before oil change
No air conditioning
Roll windows up
New PCV valve if engine hesitates
Transmission fluid
etc. etc.
Tire pressure
Premium gas
Regular oil & filter changes
Air Filter
Fuel Filter
Cruise Control
Light foot
Chevron Techron before oil change
No air conditioning
Roll windows up
New PCV valve if engine hesitates
Transmission fluid
etc. etc.
"Premium gas does not boost fuel economy or power."
http://www.cbc.ca/news/background/co...gasmilage.html
#13
Originally Posted by Frank Fontaine
It's not often that RM says something wrong, but unfortunately, he is wrong about premium contributing to fuel economy.
"Premium gas does not boost fuel economy or power."
http://www.cbc.ca/news/background/co...gasmilage.html
"Premium gas does not boost fuel economy or power."
http://www.cbc.ca/news/background/co...gasmilage.html
#16
Anybody who runs premium fuel for commuting purposes or mostly city driving is wasting their money, IMHO. Use 89 in the city. Perhaps if you're on a road trip in the summer time and are loaded down and doing a lot of climbing in hot weather, you'll notice a difference in using premium gas. That's the one and only time I've ever noticed any pinging on 89 octane.
#17
Originally Posted by rmurdoch
Anybody who runs premium fuel for commuting purposes or mostly city driving is wasting their money, IMHO. Use 89 in the city. Perhaps if you're on a road trip in the summer time and are loaded down and doing a lot of climbing in hot weather, you'll notice a difference in using premium gas. That's the one and only time I've ever noticed any pinging on 89 octane.
Just my two cents
#18
You have to remember, murdoch is in Canada where the gas is different. The additives are different which allows him to run the lower octane stuff without issue.
As for tips:
1) Keep it under 3,000rpms
2) Smooth acceleration, not sudden bursts and coasting
3) Cruise control when on the highway
4) Regular tune-ups
As for tips:
1) Keep it under 3,000rpms
2) Smooth acceleration, not sudden bursts and coasting
3) Cruise control when on the highway
4) Regular tune-ups
#20
THT is bang on. Apart from the pinging incident mentioned above, the only other time I have had engine ping was about 3 months ago. I had filled up with Chevron 89 octane in Blaine, Washington, and booted my car on the freeway a day or two later and got some engine ping. When I do fill up across the line, I always bought premim gas except for this one instance.
Why you ask? Because a lot of Canadians experience crappy performance on US87 octane gas, despite their car running fine on it in Canada. I guess the same may be said for 89 in my Maxima.
We have more additives in Canadian gas and I strongly suspect you would find your Maxima ran better on Canadian 89 octane than US89 octane. I ran Chevron 92 most of the winter. Perhaps the car pulls a little harder when you get into it, but its not really noticeable for me.
The cost differential between mid-grade and premium here is 5 cents/litre or at current exchange rates about US$0.16/US gallon. I am currently running Husky 90 octane which is sold by them at 87 octane prices, or US$0.36/US gallon less than 91 or 92 octane anywhere else. So I am saving in excess of US$6/tank by running Husky 90 ocatane gas rather than Chevron 92, Shell 91, Petro Canada 91, Esso 91. We don't have 93 octane here, but have 94 at a few stations at a higher cost than premium.
Anyone want to race, lol!
Edit - I have also gotten 550 miles to a tank 3 times on 89 octane and in excess of 500 miles to a tank on 89 octane at least 15 times on highway trips to the Okanagan - say 600 miles+ round trip, climbing from sea level to 7,000 feet in elevation, down to 2000 ft at destination and back up to 7,000 and down to sea level on return trip - generally no faster than 75mph with cruise control on.
PS The fluid comparisons are better when beer is compared, lol!
Why you ask? Because a lot of Canadians experience crappy performance on US87 octane gas, despite their car running fine on it in Canada. I guess the same may be said for 89 in my Maxima.
We have more additives in Canadian gas and I strongly suspect you would find your Maxima ran better on Canadian 89 octane than US89 octane. I ran Chevron 92 most of the winter. Perhaps the car pulls a little harder when you get into it, but its not really noticeable for me.
The cost differential between mid-grade and premium here is 5 cents/litre or at current exchange rates about US$0.16/US gallon. I am currently running Husky 90 octane which is sold by them at 87 octane prices, or US$0.36/US gallon less than 91 or 92 octane anywhere else. So I am saving in excess of US$6/tank by running Husky 90 ocatane gas rather than Chevron 92, Shell 91, Petro Canada 91, Esso 91. We don't have 93 octane here, but have 94 at a few stations at a higher cost than premium.
Anyone want to race, lol!
Edit - I have also gotten 550 miles to a tank 3 times on 89 octane and in excess of 500 miles to a tank on 89 octane at least 15 times on highway trips to the Okanagan - say 600 miles+ round trip, climbing from sea level to 7,000 feet in elevation, down to 2000 ft at destination and back up to 7,000 and down to sea level on return trip - generally no faster than 75mph with cruise control on.
PS The fluid comparisons are better when beer is compared, lol!
#21
Originally Posted by Chickan
search search search search.
I agree, though, that most gas mileage tips are common sense. I did find my mileage improved significantly when I started monitoring my tire pressure more closely.
#23
Originally Posted by THT
As for tips:
1) Keep it under 3,000rpms
2) Smooth acceleration, not sudden bursts and coasting
3) Cruise control when on the highway
4) Regular tune-ups
1) Keep it under 3,000rpms
2) Smooth acceleration, not sudden bursts and coasting
3) Cruise control when on the highway
4) Regular tune-ups
Damn no sudden bursts and coasting... i love doing that...
If your so concerned about gas milage seriously whats the point of owning a max... Tho it can get decent gas milage there plenty of other cars out there that beat it.
#25
Originally Posted by THT
There's plenty of power below 3K for daily driving.
#26
Originally Posted by udienow
Keep it under 3k rpm? You might as well drive a civic.
Damn no sudden bursts and coasting... i love doing that...
If your so concerned about gas milage seriously whats the point of owning a max... Tho it can get decent gas milage there plenty of other cars out there that beat it.
Damn no sudden bursts and coasting... i love doing that...
If your so concerned about gas milage seriously whats the point of owning a max... Tho it can get decent gas milage there plenty of other cars out there that beat it.
#28
Hmm... about 6 weeks ago I was getting about 20 mpg in mixed driving (mostly city traffic, some highway). It's weird for the past 6-10 months, it hasn't mattered how "fuel efficiently" I drove, I haven't gotten better than 22mpg nor worse than 19 mpg.
Since then, I have replaced the knock sensor, PCV valve, fuel filter, and all three O2 sensors.
At my last fuel up on Sunday, I measured 25 mpg over 400 miles, 275 of which was interstate driving averaging between 72 and 75 mph, and the remainder was in mostly city traffic.
I am completely shocked by the difference in mpgs I attained. Considering I have a '96 GLE w/ 133k on it, I think that's pretty good. I figure if I were to take an interstate trip in it, averaging about 60-65 (hah!) I could probably get the mpg up to around 28 easily. Not sure if this will ever happen because I DRIVE my car and have never been soft on it.
I am not sure if cleaning my throttle body or changing my plugs (50k on them) will help me attain any better mileage.... what do you guys think?
Since then, I have replaced the knock sensor, PCV valve, fuel filter, and all three O2 sensors.
At my last fuel up on Sunday, I measured 25 mpg over 400 miles, 275 of which was interstate driving averaging between 72 and 75 mph, and the remainder was in mostly city traffic.
I am completely shocked by the difference in mpgs I attained. Considering I have a '96 GLE w/ 133k on it, I think that's pretty good. I figure if I were to take an interstate trip in it, averaging about 60-65 (hah!) I could probably get the mpg up to around 28 easily. Not sure if this will ever happen because I DRIVE my car and have never been soft on it.
I am not sure if cleaning my throttle body or changing my plugs (50k on them) will help me attain any better mileage.... what do you guys think?
#29
Originally Posted by SteveWWJ
Hmm... about 6 weeks ago I was getting about 20 mpg in mixed driving (mostly city traffic, some highway). It's weird for the past 6-10 months, it hasn't mattered how "fuel efficiently" I drove, I haven't gotten better than 22mpg nor worse than 19 mpg.
Since then, I have replaced the knock sensor, PCV valve, fuel filter, and all three O2 sensors.
At my last fuel up on Sunday, I measured 25 mpg over 400 miles, 275 of which was interstate driving averaging between 72 and 75 mph, and the remainder was in mostly city traffic.
I am completely shocked by the difference in mpgs I attained. Considering I have a '96 GLE w/ 133k on it, I think that's pretty good. I figure if I were to take an interstate trip in it, averaging about 60-65 (hah!) I could probably get the mpg up to around 28 easily. Not sure if this will ever happen because I DRIVE my car and have never been soft on it.
I am not sure if cleaning my throttle body or changing my plugs (50k on them) will help me attain any better mileage.... what do you guys think?
Since then, I have replaced the knock sensor, PCV valve, fuel filter, and all three O2 sensors.
At my last fuel up on Sunday, I measured 25 mpg over 400 miles, 275 of which was interstate driving averaging between 72 and 75 mph, and the remainder was in mostly city traffic.
I am completely shocked by the difference in mpgs I attained. Considering I have a '96 GLE w/ 133k on it, I think that's pretty good. I figure if I were to take an interstate trip in it, averaging about 60-65 (hah!) I could probably get the mpg up to around 28 easily. Not sure if this will ever happen because I DRIVE my car and have never been soft on it.
I am not sure if cleaning my throttle body or changing my plugs (50k on them) will help me attain any better mileage.... what do you guys think?
Try adding a bottle of Chevron Techron say 250 miles before your next oil change and see what that does. You might also want to consider Seafoam through the brake booster hose.
What's killing you is the city driving. Your mileage isn't too bad on the highway.
Also check your tire pressure and over-inflate them slightly (say 35 PSI).
#30
The max says premuim in the fuel door. And the common answer is running anything higher then recommened will not help while running less then what is specified will. So isn't anything below premuim bad? Also running premium will let you further advance timeing if I am correct which breings with it better gas mileage and performance?
#31
Originally Posted by soontomaxima
The max says premuim in the fuel door. And the common answer is running anything higher then recommened will not help while running less then what is specified will. So isn't anything below premuim bad? Also running premium will let you further advance timeing if I am correct which breings with it better gas mileage and performance?
#32
Originally Posted by lindenbusch
The search feature has been disabled for registered members.
I agree, though, that most gas mileage tips are common sense. I did find my mileage improved significantly when I started monitoring my tire pressure more closely.
I agree, though, that most gas mileage tips are common sense. I did find my mileage improved significantly when I started monitoring my tire pressure more closely.
As for the thread .. IMHO I think keeping your car in tip top condition has everything to do with gas mileage. I drive mine like a maniac most of the time (70/30) And still get 27 MPG.
#33
Originally Posted by rmurdoch
The timing can be advanced on a 5th Gen but not a 4th Gen. Higher octane gasoline is required with the advanced timing, ie. premium.
#34
Originally Posted by THT
You're technically incorrect. 4th gen timing can be advanced however, you will have to use an SMT unit or upgrade your ECU through JWT or Technosquare. The 5th gen advance that we can't do is via Consult II as our ECUs "forget" the setting when the car is turned off.
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