what is the capacity of the stock gas tank?

stanger8172 · 04-24-2002, 11:37 PM

Is it 15 or 15.5 gallons or what? I squeezed 270 mi. out of one full tank. I am trying to prove to my dad that my car passes gas stations too.

Thanx

1989_351W · 04-25-2002, 01:29 AM

15.6 gallons to be precise. You must bet treating your Mustang right to be getting such good MPG.

Bad89stang · 04-25-2002, 02:37 AM

Last tank I went 168 miles on 12.6 gallons of fuel. Every tank is the same unless I am really getting on it alot. Works out to be 21.25 miles per gallon.

Not too bad for a 5 speed with 3:55 gears in the city.

Maroon 5.0 LX · 04-25-2002, 06:39 AM

My '89 5.0 gets 19 mpg around home, and 26 mpg on the highway....

stanger8172 · 04-25-2002, 08:27 AM

Bad89stang,

Yeah I hear ya. When I get on it the needle drops faster than a penny off the empire state building.

I did drop initial timing to 8 though until race day. I'll bump it back up to 13 or 14 on race day. With this setting it feels like i just lost alot of top end.

1988GTCONERTIBLE · 04-25-2002, 09:32 AM

I don't know why but I only average about 11 mpg no matter how I drive the car. I just have the regular bolt on stuff: exhaust, gears (3.73) Drive shaft, etc... I can't wait to see what my new motor gives me!

sn95gt19 · 04-25-2002, 10:21 AM

IM SCARED TO SEE WHAT MY GAS MILEAGE IS GOING TO BE I JUST PUT A 3.73, HEADS, HEADERS, INTAKE, TB, MASS AIR, CHIP, AND JUST ABOUT EVERY OTHER GOODIE THERE IS ON MINE, BEFORE ALL THAT I WAS GETTING BETWEEN 13-15 MPG, I ALSO PUT 24# INJECTORS IN. I GUESS I JUST DRIVE MY CAR A LITTLE HARD SOMETIMES, I GUN IT EVERY CHANCE I GET(PROB. WHY ITS MY 2ND MOTOR IN 2 YEARS.

Comatose · 04-25-2002, 05:02 PM

I've never put more than 13.3 gallons in my 86', it's nice to know that there are a couple gallons left at that point.

I average about 18mpg in town and 23-25 on the highway. Stock w/2.73's.

Bad89stang · 04-25-2002, 09:39 PM

is it just me or does the stock fuel guage suck? I have to fill up at 1/4 because I have run out twice when it even got close to the red.

Unit 5302 · 04-25-2002, 09:54 PM

Well to be more technically accurate, you have a 15.4 gallon tank, not a 15.6 gallon tank.

My 1987GT gets about 19-21 in town, and 27-29 over the road. The SEFI 5.0HO Mustang's do get very good fuel economy for the kind of car they are.

The stock fuel gauge sending units in the fox cars are notorious for wearing out. That's probably what the deal is for you Bad89stang

Hozer 88GTConv · 04-25-2002, 11:03 PM

Quote:

Originally posted by Bad89stang
Last tank I went 168 miles on 12.6 gallons of fuel. Every tank is the same unless I am really getting on it alot. Works out to be 21.25 miles per gallon.

Not too bad for a 5 speed with 3:55 gears in the city.

I may be confused but that's only 13 MPG
I guess I have to get my money for Calculus back

Bad89stang · 04-25-2002, 11:08 PM

Logic would say maybe I meant 268.

Hozer 88GTConv · 04-25-2002, 11:19 PM

Logic would say "use the edit button"
testy, testy...
just glad I don't have to take my calculator back to the store.

fubar89lx · 04-27-2002, 05:25 PM

You guys are lucky.I only get a little under 200 miles on a full tank of gas. And the fuel gauge does suck. My gauge will be pegged past full sometimes and I know there is only a 1/2 tank.

04-24-2002, 11:37 PM	#1
stanger8172 Registered Member Join Date: Nov 2000 Location: Milwaukee,Wisconsin Posts: 380	what is the capacity of the stock gas tank? Is it 15 or 15.5 gallons or what? I squeezed 270 mi. out of one full tank. I am trying to prove to my dad that my car passes gas stations too. Thanx __________________ '91 LX convertible , T-5, Centerforce Dual Friction, MSD Blaster Coil, FR 9MM wires, 13* timing, 1.6rr, ported/polished/milled stock heads, 1.94/1.60 stainless valves, March Performance Pulleys, K&N panel, 1"spacer, BBK shorties, 2 1/2" off road H, Summit 2 1/2" catback

04-25-2002, 01:29 AM	#2
1989_351W Registered Member Join Date: Jul 2001 Location: Spring Lake NC 28390 Posts: 44	15.6 gallons to be precise. You must bet treating your Mustang right to be getting such good MPG. __________________ Michael Wigton 1989 351 Windsor 1964 1/2 Convertible

04-25-2002, 02:37 AM	#3
Bad89stang Registered Member Join Date: Aug 2001 Location: Ft. Worth, TX Posts: 456	MPG Last tank I went 168 miles on 12.6 gallons of fuel. Every tank is the same unless I am really getting on it alot. Works out to be 21.25 miles per gallon. Not too bad for a 5 speed with 3:55 gears in the city. __________________ You're gonna need your seatbelt

04-25-2002, 06:39 AM	#4
Maroon 5.0 LX Registered Member Join Date: Mar 2001 Location: Southern Maryland Posts: 471	My '89 5.0 gets 19 mpg around home, and 26 mpg on the highway.... __________________ '89 LX 5.0 - 5 speed. Original Owner '94 E-150 4.9 Hi-Top Conversion Van '06 Mustang V-6, 5 speed

04-25-2002, 08:27 AM	#5
stanger8172 Registered Member Join Date: Nov 2000 Location: Milwaukee,Wisconsin Posts: 380	Bad89stang, Yeah I hear ya. When I get on it the needle drops faster than a penny off the empire state building. I did drop initial timing to 8 though until race day. I'll bump it back up to 13 or 14 on race day. With this setting it feels like i just lost alot of top end. __________________ '91 LX convertible , T-5, Centerforce Dual Friction, MSD Blaster Coil, FR 9MM wires, 13* timing, 1.6rr, ported/polished/milled stock heads, 1.94/1.60 stainless valves, March Performance Pulleys, K&N panel, 1"spacer, BBK shorties, 2 1/2" off road H, Summit 2 1/2" catback

04-25-2002, 09:32 AM	#6
1988GTCONERTIBLE Registered Member Join Date: Mar 1999 Posts: 11	I don't know why but I only average about 11 mpg no matter how I drive the car. I just have the regular bolt on stuff: exhaust, gears (3.73) Drive shaft, etc... I can't wait to see what my new motor gives me!

04-25-2002, 10:21 AM	#7
sn95gt19 motors done......woohooo Join Date: Mar 2002 Posts: 799	IM SCARED TO SEE WHAT MY GAS MILEAGE IS GOING TO BE I JUST PUT A 3.73, HEADS, HEADERS, INTAKE, TB, MASS AIR, CHIP, AND JUST ABOUT EVERY OTHER GOODIE THERE IS ON MINE, BEFORE ALL THAT I WAS GETTING BETWEEN 13-15 MPG, I ALSO PUT 24# INJECTORS IN. I GUESS I JUST DRIVE MY CAR A LITTLE HARD SOMETIMES, I GUN IT EVERY CHANCE I GET(PROB. WHY ITS MY 2ND MOTOR IN 2 YEARS.

04-25-2002, 05:02 PM	#8
Comatose Registered Member Join Date: Oct 2001 Location: Goldendale, WA, USA Posts: 84	I've never put more than 13.3 gallons in my 86', it's nice to know that there are a couple gallons left at that point. I average about 18mpg in town and 23-25 on the highway. Stock w/2.73's. __________________ Jeremiah 1986 Mustang GT K&N Filter, Removed Air Silencer, Black Magic Fan, 65mm Explorer TB, 110lph BBK Fuel Pump, F/M Force II Cat -Back, O/R h-pipe, U/D's Timing@14* 1986 Mustang LX SSP--new project car AOD, 3.27's, Dumps, 238k miles

04-25-2002, 09:39 PM	#9
Bad89stang Registered Member Join Date: Aug 2001 Location: Ft. Worth, TX Posts: 456	is it just me or does the stock fuel guage suck? I have to fill up at 1/4 because I have run out twice when it even got close to the red. __________________ You're gonna need your seatbelt

04-25-2002, 09:54 PM	#10
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Well to be more technically accurate, you have a 15.4 gallon tank, not a 15.6 gallon tank. My 1987GT gets about 19-21 in town, and 27-29 over the road. The SEFI 5.0HO Mustang's do get very good fuel economy for the kind of car they are. The stock fuel gauge sending units in the fox cars are notorious for wearing out. That's probably what the deal is for you Bad89stang

04-25-2002, 11:08 PM	#12
Bad89stang Registered Member Join Date: Aug 2001 Location: Ft. Worth, TX Posts: 456	Logic would say maybe I meant 268. __________________ You're gonna need your seatbelt

04-25-2002, 11:19 PM	#13
Hozer 88GTConv Registered Member Join Date: Feb 2002 Location: Jacksonville, FL Posts: 706	logically... Logic would say "use the edit button" testy, testy... just glad I don't have to take my calculator back to the store. __________________ 1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy

04-27-2002, 05:25 PM	#14
fubar89lx Registered Member Join Date: Apr 2002 Location: Palm Bay,FL Posts: 24	You guys are lucky.I only get a little under 200 miles on a full tank of gas. And the fuel gauge does suck. My gauge will be pegged past full sometimes and I know there is only a 1/2 tank. __________________ Best E/T-13.2 Best MPH-108 Mods-Full exhaust,U/D pulleys,73mm mass air,70 mm M/A,Cobra intake,Crane 1.7 R/R,E303 Cam,3.55 gear,125HP Nitrous Works.

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