The gas mileage thread

[colonel6632]

i was surfing around the internet and found this adobe file with "tips" on increase your gas mileage. some of it i agree with, some i'm not too sure about.

http://www.superchargerperformance.com/wp-content/uploads/2009/06/SuperchargerPerformance_MileageBooster.pdf

what do you think.

personally, i get around or better than what the alero is rated for.

things i have done from the list include
NGK spark plugs, K&N intake, Seafoam regularly, Full synthetic oils, High tire PSI, aluminum rims.

now the synthetic oil, i never believed it to really make a fuel mileage difference.

My mileage is

City, 25-27mpg (this is usually hard driving, not driving like an old lady)
Highway, average 35mpg. but have gotten 42 on a few occasions.

what i average in the alero, 30-32mpg mixed with small town driving (lots of stop and go) and highway driving.

[Cashdollar2009]

23 highway.
18 city.
1 angry driver who has tried every tip to improve fuel economy.

[wrestlingandrunning]

let's just say i get the same gas mileage in my 20yr 300zx as i do in my alero :(

[[ion] C2]

31+ MPG highway
20-27 MPG city (depends on how aggressive I drive.. it's very tempting)

Worth noting, my instantaneous MPG is 1-2 @ WOT

[C_EICK]

I get 20-22 city, then again I drive with purpose:lol:

[cavaliers60]

I drive average, and get about 20-23 mpg.... Sucks..

[Cliff8928]

I get 26 with the Ecotec and 19 with my poorly tuned 3400 driving to work and back.

[cherrington17]

26-28 hwy
20-24 city

3400

[JLw7123]

i get 20 city and 26 highway

[black]

i get 34-36 mpg with my mazda 626.

and i don't drive like an old lady.

[colonel6632]

no thoughts on the different tips though?

like lowering your car which makes lower air dam, or the stiffer shocks/struts.

in theory it makes sense, but i'm not sure sure about it

[Alerojester]

ok if you think about it lower your car you have less air going under your car to push your car back, if you think about a 4x4 truck what's the milage there? its like maybe city 8 and highway is like 12-15 look at it that way

[Chris2000]

I drive all city and I get about 250-275 on a full tank.

2.4 LD9.

[black]

no thoughts on the different tips though?

like lowering your car which makes lower air dam, or the stiffer shocks/struts.

in theory it makes sense, but i'm not sure sure about it

drafting.

i can get 60-100+ extra miles per tank that way.

[cherrington17]

drafting.

i can get 60-100+ extra miles per tank that way.
only works behind semi-trailers. modern cars don't draft for crap, and don't move fast enough to get any benefit from it.

[mrmike]

I usually get around 37mpg with my stock engine and heavy chrome wheels. Doesn't hurt that I drive across the straightest and flattest section of road in the world haha. On my last trip during the summer i went 615 km before refueling and it still had 3-4 litres left in the tank.

[robalero]

so according to my readings im avging 40 mpg ( 80 highway 20 city ) on my 2.4L WAI new AC Delco spark plugs 5 speed tranny ( I gotta change my fuel filter soon too ) I wasn't expecting to get around this for fuel mileage but im deff not complaining I was expecting worse

[Ttop191]

ur funny guy.

[robalero]

I probably did it wrong myself, but I get roughly 550km to 600 km's on a tank of gas which in miles I really have no idea

[cherrington17]

there is NO WAY any alero EVER gets 80mpg highway. even 40 is pretty unbelievable.

i think you missed a decimal place in your math somewhere

[robalero]

hey no doubt about it, on my highways I am not doing 110 km/h, its really not even a highway but more of a old highway of a max speed of 80 km/h which I do and is probably why I get pretty good fuel mileage theres no reason why I would lie of it but I garunteed I probably missed something somewheres if any wants they can figure it out themselfs at 550 to 600 km's a tank at 14 gallons

[robalero]

so I went and used this site: http://www.calculatenow.biz/conversions/consumption.php?fu=45&vol=lt&dt=550&dist=km&fc=&ratio=mpg&submit=Convert#converter

and I guess im avgering 35 mpg according to that which is 8L per 100 km's

[colonel6632]

see guys, he could be correct. in canada we use uk liters, which is different than american liters. i converted mine to american liters and did it like that.

i average 40mpg when i use uk liters to figure it out

[[ion] C2]

I probably did it wrong myself, but I get roughly 550km to 600 km's on a tank of gas which in miles I really have no idea
That equates to about 24 - 26 miles per gallon. Fuel tank size is 14.3 gallons, but you never really empty it all the way.

[robalero]

I think colonel is on to what I am probably saying, I am use to the way of UK stuff not US stuff but god knows I just know it cost me normally $35 to $40 to fill my car when its not on the E but near it and I run for about a week sometimes a little longer before I have to fill up ( not much longer tho day or two at most )

[billytheman1188]

23 city 34 highway......3400

[Weazel]

I was getting about 200-230 miles on a tank, mixed city and highway. Of course, whenever I went to fill up, the most I'd ever put in my tank was 12-12.5 gallons at just below E.

Overall, horrible horrible mileage.

[black]

only works behind semi-trailers. modern cars don't draft for crap, and don't move fast enough to get any benefit from it.

yup, semi's are great for it.

i locate a semi that is going 72 and draft.

i have been going to chicago a lot lately.

750 miles + round trip.

my grandma (last living elder) who is 91 has been stroking out bad.

she has no clue who she or anyone else is.

ohh yeah, back to gas mileage tips.

another good tip, unplug the AC compressor.

[AlbinoMonkeyRat]

drafting = 70mph and faster for any mileage benefit. Any slower and you're being an asshole. :)

and the link above...I got around 29mpg last week...on a bad hub and a rusty fuel line throwing the po440 code. hehe

[mrmike]

um wasn't drafting on the highway some stupid joke based on nascar that was just a retarded excuse to tailgate someone? I remember when i first heard about it, "they" did a test that revealed that it had no effect other than an increase in traffic accidents.

[Weazel]

um wasn't drafting on the highway some stupid joke based on nascar that was just a retarded excuse to tailgate someone? I remember when i first heard about it, "they" did a test that revealed that it had no effect other than an increase in traffic accidents.

It's quite real. You'll end up dying doing it on the highway, but it's quite real.

[mrmike]

If anyone values mileage over their own safety and the safety of others I think its time to revoke some licenses and provide mental counseling.

[colonel6632]

i've thought about drafting, but i normally dont do it

[Ttop191]

back when i had my 2.4 ho, i was averaging anywhere from 28-37 mpg 100% stock, it just depended on my mood for that week ;)

as for tips, i know its been said a million times, but i'll say it 3 more TIRE PRESSURE! TIRE PRESSURE! TIRE PRESSURE!

[Shiwnath]

Has anyone heard of this? http://www.gas-king.com/
My brother has it on his Mazda 6 and he said it helped a bit. I want to try it on my Alero to see if there is a difference. I want to know if it works or if its just another gimmick. I get around 248 miles on a tank of gas with mixed city and high driving with my 3400. I usually do around 74 miles on the highway if conditions are good.

[cherrington17]

It's quite real. You'll end up dying doing it on the highway, but it's quite real.

on modern cars, you'd have to be moving at a high rate of speed, and less than a foot away to get benefits.

...unless its a semi trailor.. and you still have to be too close for comfort. So.... don't try it.

[AlbinoMonkeyRat]

um wasn't drafting on the highway some stupid joke based on nascar that was just a retarded excuse to tailgate someone? I remember when i first heard about it, "they" did a test that revealed that it had no effect other than an increase in traffic accidents.
my remark was a generalized statement, not directed at you or any specific person. :)

[black]

another thing i do is coast.

i do a lot of coasting.

me and the kids even have a game for it, to see how far i can coast.

as for drafting, i do see an incredible increase in gas mileage just being 30 feet away. i don't get all stupid and try to draft 5 feet away from a semi.

here are some simple stats about drafting.

http://green.autoblog.com/2007/10/28/mythbusters-drafting-10-feet-behind-a-big-rig-will-improve-mile/

[keytonic]

15-18 mpg

It's a Jeep though. I would really like to be driving my ho but some asshole decided to take some parts he wanted for himself the night I went and got an engine to replace. So nagged about to part it out

[BeeMain]

23 city, 3400, 2003

[gerry]

This just in, my cars getting 26.8 mpg.

I filled up the tank, reset the trip counter. At next fill up, used that volume per distance to get the score.

[illzwhy]

16.7 mpg, city, 2001 GL Sedan, 2.4.

Which is really bad...especially when the gas price is sky high now~!!! My friend was so surprized the mileage was so bad... >.<

But still I love my Alero since it's my 1st car~!! LOL~

[AlbinoMonkeyRat]

16.7 mpg, city, 2001 GL Sedan, 2.4.

Which is really bad...especially when the gas price is sky high now~!!! My friend was so surprized the mileage was so bad... >.<

But still I love my Alero since it's my 1st car~!! LOL~
get an oil change, clean/replace your air filter, make sure your tires are properly inflated. should see the mileage go up over 20 mpg then...

[gerry]

I agree. I'm due for an oil change and I'm going to get the fuel filter changed at the same time. Ill let you know the results.

[Ttop191]

I was lucky when i had my ho...was getting 28 city 37-42 highway...absolute anomaly

[jayson_waltz]

I'd get about 28-30 hwy with my 2.4 at 70mph. Around 18 city if i drove nice. Now I get 18 hwy tops in the summer, 15 in winter, so dnt complain :p