Gas Mileage

phebecates78 · December 5th, 2007, 12:55 PM

what is everyone getting...it seems like no matter how i shift the car ( high rpms and low rpms) that im getting 15-17 highway and street....over the summer i was getting like 20-21 combined but now all of a sudden it dropped...

G.T. Rags · December 5th, 2007, 01:56 PM

do u do any recent modifications to the car?

i used to get 22 to the gallon but since i did the gear swap its more like 17

phebecates78 · December 5th, 2007, 02:25 PM

not any performace mods....i dont get it..i was thinking of seafoaming the car and changing fuel filter

ModMustang97GT · December 5th, 2007, 03:15 PM

Id check the plugs and see if any are fowled. And seafoam is a good idea anyway.

Uncle Humjaba · December 5th, 2007, 03:20 PM

I usually get ~18mpg city (17 if driving like a jerk) and 23 on the freeway (again, less if driving like a jerk

)

ReverendDexter · December 5th, 2007, 03:26 PM

In the Cobra I get about 14-16 in the city, and 22-26 on the highway depending on how I drive. What's funny about that is that the 26mpg is when I drive the heck out of her, and 22 is when I'm taking it easy (no joke).

About 6 months ago, my mileage dropped from 22 to about 11. Fresh plugs brought it right back up.

Just whatever you do, do NOT put Bosch plugs in your car! I can't emphasize that enough. I swear by NGKs myself.

ModMustang97GT · December 5th, 2007, 04:43 PM

Its all about the NGK. I run tr-55's my self. Copper, after I fowled 4 sets of plugs I decided the platinum and iridium was not worth it.

phebecates78 · December 5th, 2007, 07:12 PM

i changd the plugs about 9 months ago? you think they went back?? i doubt it...would seafoam and fuel filter make a diffrence?

97GT4.6 · December 5th, 2007, 07:31 PM

That's probably the problem with my car. I have been getting 13 driving it easy in town.. recharged the k and n, filled up the tires, put in fuel injector cleaner.. but its probably plugs because these waste spark ignition systems go through plugs pretty fast.

gtdan · December 5th, 2007, 08:03 PM

Originally Posted by 97GT4.6

That's probably the problem with my car. I have been getting 13 driving it easy in town.. recharged the k and n, filled up the tires, put in fuel injector cleaner.. but its probably plugs because these waste spark ignition systems go through plugs pretty fast.

probably cause you live in the mtns

droppedbass87 · December 6th, 2007, 10:56 PM

i get 27 mpgs per gallon on the highway on 20 in the city with my 4r70w and 3.73s in the rear..to a full tank i got 380 miles and could have went a lil further..

phebecates78 · December 7th, 2007, 08:40 AM

r u kidding me!?!?! omg...if i get 20 highway im pumped...i get about 240 a tank if rthat...

droppedbass87 · December 8th, 2007, 04:32 AM

yeah alot of people think im lieing but i swear on it and i have 3 people to witness for me...oh and i use 93 octane which makes a huge difference..

phebecates78 · December 8th, 2007, 09:47 AM

oh wel thats why...i see no point in using high test unless u have to..if it says i can use 87...thats whats going in there lol

droppedbass87 · December 8th, 2007, 11:36 PM

yes but you think 87 is 20cents cheaper and you put 10 dollars in and you get what 3.8 gallons..93 you put 10 dollars in and you get 3.4 maybe 3.3 gallons..just put another dollar with that 10 and there ya go you have 3.8 gallons and you can tell the bigggest difference in performance between the 2..and dont mix either make sure you run all 87 out and then put 4 bucks of 93 in there and run that out and your good

StangAddiction · December 8th, 2007, 11:58 PM

with my current mods i get around 15 city mpg..I do put my foot in it sometimes...and i have 4.10s...But even with 4.10s, if i use 5th on the highway, i get around 21-22 highway mpg... A side note though, my car is a 00...im not sure what difference that makes so...

Uncle Humjaba · December 9th, 2007, 01:10 AM

+1 premium gas gets better gas mileage. and that's with the crappy 91 octane they sell here in CA.

97GT4.6 · December 9th, 2007, 04:37 PM

I guess ill try my next tank on 91 octane.. maybe that will make a difference.. and maybe new plugs anyways.

MustangMatt96GT · December 9th, 2007, 04:44 PM

i run only shell 91 through my car! And i only get around 150-180 miles per tank! But that is also with 4.10s and me being on the loud pedal ALOT!

atrains-gt · December 9th, 2007, 08:44 PM

Last I checked I was get 14mpg city with 2.73's and my foot in it. Whats funny is that it would do a little worse if I dogged it around. I have since installed 3.73's gears, new plugs and plug wires. I will try to check my MPG again soon but it may not happen this month.

December 5th, 2007, 12:55 PM	#1
phebecates78 Regular 1998 mustang gt Join Date: Oct 2007 Location: Cedar Grove NJ Posts: 108 iTrader: 0 reviews	Gas Mileage what is everyone getting...it seems like no matter how i shift the car ( high rpms and low rpms) that im getting 15-17 highway and street....over the summer i was getting like 20-21 combined but now all of a sudden it dropped...

December 5th, 2007, 03:20 PM	#5
Uncle Humjaba Enthusiast 1996 Mustang GT Premium 15.2@91 Join Date: Aug 2007 Location: Tracy, CA and Clemson, SC Posts: 592 iTrader: 0 reviews	I usually get ~18mpg city (17 if driving like a jerk) and 23 on the freeway (again, less if driving like a jerk ) __________________ "He is no fool who gives up what he cannot keep to gain what he cannot lose."

December 5th, 2007, 03:26 PM	#6
ReverendDexter Priest of the Car Gods Clapped-out '90 GT 'vert ~5.5 seconds off TTOD :( Join Date: Jan 2007 Location: Rohnert Park, CA Posts: 13,233 iTrader: 0 reviews	In the Cobra I get about 14-16 in the city, and 22-26 on the highway depending on how I drive. What's funny about that is that the 26mpg is when I drive the heck out of her, and 22 is when I'm taking it easy (no joke). About 6 months ago, my mileage dropped from 22 to about 11. Fresh plugs brought it right back up. Just whatever you do, do NOT put Bosch plugs in your car! I can't emphasize that enough. I swear by NGKs myself. __________________ O o /¯/______________________ \|BLAAAAAAAAAAAAAAAAAAAAAAAAARGH!!! \_\ Buy my Bronco, special deal for MM folks

December 5th, 2007, 07:31 PM	#9
97GT4.6 Hardcore Enthusiast 97 GT 14.2@99.8 @ 4800 ft Join Date: Oct 2007 Location: Fort Collins and Pueblo, Colorado Posts: 2,347 iTrader: 1 reviews	That's probably the problem with my car. I have been getting 13 driving it easy in town.. recharged the k and n, filled up the tires, put in fuel injector cleaner.. but its probably plugs because these waste spark ignition systems go through plugs pretty fast. __________________ Cammed 2v Built By MustangMatt More mods than times your daughter has slept around

December 6th, 2007, 10:56 PM	#11
droppedbass87 Hardcore Enthusiast Join Date: Sep 2006 Location: diberville,mississippi Posts: 1,894 iTrader: 0 reviews	i get 27 mpgs per gallon on the highway on 20 in the city with my 4r70w and 3.73s in the rear..to a full tank i got 380 miles and could have went a lil further.. __________________ fraziers transmission service..

December 5th, 2007, 02:25 PM	#3
phebecates78 Regular 1998 mustang gt Join Date: Oct 2007 Location: Cedar Grove NJ Posts: 108 iTrader: 0 reviews	not any performace mods....i dont get it..i was thinking of seafoaming the car and changing fuel filter

December 5th, 2007, 03:15 PM	#4
ModMustang97GT Hardcore Enthusiast 1997 Mustang GT Faster than an s4 Join Date: Aug 2007 Location: Seattle, WA Posts: 1,598 iTrader: 0 reviews	Id check the plugs and see if any are fowled. And seafoam is a good idea anyway.

December 5th, 2007, 04:43 PM	#7
ModMustang97GT Hardcore Enthusiast 1997 Mustang GT Faster than an s4 Join Date: Aug 2007 Location: Seattle, WA Posts: 1,598 iTrader: 0 reviews	Its all about the NGK. I run tr-55's my self. Copper, after I fowled 4 sets of plugs I decided the platinum and iridium was not worth it.

December 5th, 2007, 07:12 PM	#8
phebecates78 Regular 1998 mustang gt Join Date: Oct 2007 Location: Cedar Grove NJ Posts: 108 iTrader: 0 reviews	i changd the plugs about 9 months ago? you think they went back?? i doubt it...would seafoam and fuel filter make a diffrence?

December 7th, 2007, 08:40 AM	#12
phebecates78 Regular 1998 mustang gt Join Date: Oct 2007 Location: Cedar Grove NJ Posts: 108 iTrader: 0 reviews	r u kidding me!?!?! omg...if i get 20 highway im pumped...i get about 240 a tank if rthat...

December 8th, 2007, 04:32 AM	#13
droppedbass87 Hardcore Enthusiast Join Date: Sep 2006 Location: diberville,mississippi Posts: 1,894 iTrader: 0 reviews	yeah alot of people think im lieing but i swear on it and i have 3 people to witness for me...oh and i use 93 octane which makes a huge difference.. __________________ fraziers transmission service..

December 8th, 2007, 09:47 AM	#14
phebecates78 Regular 1998 mustang gt Join Date: Oct 2007 Location: Cedar Grove NJ Posts: 108 iTrader: 0 reviews	oh wel thats why...i see no point in using high test unless u have to..if it says i can use 87...thats whats going in there lol

December 8th, 2007, 11:36 PM	#15
droppedbass87 Hardcore Enthusiast Join Date: Sep 2006 Location: diberville,mississippi Posts: 1,894 iTrader: 0 reviews	yes but you think 87 is 20cents cheaper and you put 10 dollars in and you get what 3.8 gallons..93 you put 10 dollars in and you get 3.4 maybe 3.3 gallons..just put another dollar with that 10 and there ya go you have 3.8 gallons and you can tell the bigggest difference in performance between the 2..and dont mix either make sure you run all 87 out and then put 4 bucks of 93 in there and run that out and your good __________________ fraziers transmission service..

December 8th, 2007, 11:58 PM	#16
StangAddiction Enthusiast 2000 Mustang GT Join Date: Jan 2007 Location: Virginia Beach Posts: 986 iTrader: 0 reviews	with my current mods i get around 15 city mpg..I do put my foot in it sometimes...and i have 4.10s...But even with 4.10s, if i use 5th on the highway, i get around 21-22 highway mpg... A side note though, my car is a 00...im not sure what difference that makes so...

December 9th, 2007, 01:10 AM	#17
Uncle Humjaba Enthusiast 1996 Mustang GT Premium 15.2@91 Join Date: Aug 2007 Location: Tracy, CA and Clemson, SC Posts: 592 iTrader: 0 reviews	+1 premium gas gets better gas mileage. and that's with the crappy 91 octane they sell here in CA. __________________ "He is no fool who gives up what he cannot keep to gain what he cannot lose."

December 9th, 2007, 04:37 PM	#18
97GT4.6 Hardcore Enthusiast 97 GT 14.2@99.8 @ 4800 ft Join Date: Oct 2007 Location: Fort Collins and Pueblo, Colorado Posts: 2,347 iTrader: 1 reviews	I guess ill try my next tank on 91 octane.. maybe that will make a difference.. and maybe new plugs anyways. __________________ Cammed 2v Built By MustangMatt More mods than times your daughter has slept around

December 9th, 2007, 04:44 PM	#19
MustangMatt96GT Proud American 1996 Mustang GT 10.76 @ 122 with d/a of 8365 ft Join Date: Dec 2006 Location: Lakewood, CO Posts: 10,168 iTrader: 3 reviews	i run only shell 91 through my car! And i only get around 150-180 miles per tank! But that is also with 4.10s and me being on the loud pedal ALOT! __________________ RIP Travis Billings Special Thanks to: Andrews Racing Transmissions Baseline Suspensions Blown Small Block Ford with a hole in the block. 9.5 Dart Block 400 CI being saved for. Just because you can fuck a cactus doesn't mean you should. Never Lift Racecars

December 9th, 2007, 08:44 PM	#20
atrains-gt Newbie Join Date: Dec 2007 Posts: 17 iTrader: 0 reviews	Last I checked I was get 14mpg city with 2.73's and my foot in it. Whats funny is that it would do a little worse if I dogged it around. I have since installed 3.73's gears, new plugs and plug wires. I will try to check my MPG again soon but it may not happen this month.

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