• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-

Winter fuel additive

  • Thread starter Thread starter JJHstang
  • Start date Start date Dec 12, 2025
J

JJHstang

5 Year Member
Sep 12, 2018
222
14
18
Fort Worth, TX
Dec 12, 2025
#1
  • Dec 12, 2025
  • #1
My 71 does not get driven very much at all in the winter. Sits in the garage and wondering what should I add the fuel.
Anyone have what is the best fuel additive to use.
I live in Fort Worth, tx.
 

91AOD5.0LX

I have a slight sag in my rear
5 Year Member
Feb 20, 2021
1,027
941
133
Lake George NY
Dec 12, 2025
#2
  • Dec 12, 2025
  • #2
This is what I have used for many years during the long New York winters.

 
Reactions: 2Blue2

Mcmahst

5 Year Member
Jan 19, 2021
666
261
83
Laguna Woods CA, fort Mohave AZ
Dec 12, 2025
#3
  • Dec 12, 2025
  • #3
For me, I try to move to non ethanol fuel a few tanks before the summer (in Az) sends the car to the garage. I had a bad ethanol/Sta-Bil reaction that caused me to pull my new 73 tank out for cleaning. I’m good with Sta-Bil and non ethanol fuel. Just my experience. Good luck.
 

Realmongo

I prefer to be called "Evil Genius"
Founding Member
Oct 10, 2001
2,468
86
99
Western Mass
Jan 9, 2026
#4
  • Jan 9, 2026
  • #4
I've been using Stabil in all 4 of my Mustangs for the past 20 years with good results.
 
G

GOvert

15 Year Member
Jan 27, 2007
485
99
48
north central Tennessee Valley
Jan 10, 2026
#5
  • Jan 10, 2026
  • #5
I need me some of that WINTER FURL additive!
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
42,915
21,087
234
Box behind Walmart
Jan 10, 2026
#6
  • Jan 10, 2026
  • #6
GOvert said:
I need me some of that WINTER FURL additive!
Click to expand...

I dunno. I think you've probably had enough of that stuff.
 
Reactions: GOvert
G

GOvert

15 Year Member
Jan 27, 2007
485
99
48
north central Tennessee Valley
Jan 17, 2026
#7
  • Jan 17, 2026
  • #7
I see that the spelling error was corrected. I was making a joke off of that!
@Noobz347. I don't drink...
 

Realmongo

I prefer to be called "Evil Genius"
Founding Member
Oct 10, 2001
2,468
86
99
Western Mass
Jan 17, 2026
#8
  • Jan 17, 2026
  • #8
GOvert said:
I see that the spelling error was corrected. I was making a joke off of that!
@Noobz347. I don't drink...
Click to expand...
Don't drink what?
 

manicmechanic007

5 Year Member
Sep 26, 2017
2,524
709
143
Roy, Utah
Jan 17, 2026
#9
  • Jan 17, 2026
  • #9
Please drive the car and run all the gas out
Then refill with winter blend fuel if there is a difference in TX
Do the same next year
Going to drive my 69 this summer to do the same
I have a drain plug in the tanks of my old ones
 
G

GOvert

15 Year Member
Jan 27, 2007
485
99
48
north central Tennessee Valley
Jan 17, 2026
#10
  • Jan 17, 2026
  • #10
@Realmongo Alcohol. And I try not to drink gasoline if I can help it.
@manicmechanic007 Down here in the southeast, we have summer and winter blends too. That reminds me that I need to go start up one of my other older Fords and see if I can use up what it in the tank then put in 2 gallons of winter blend. 3.5 years ago, I installed new injectors and had the tank out and super cleaned it and installed a new electric pump cartridge. (Yes, I know that the pump should be submersed but it is not drivable and 20 minutes of run time won't hurt it).
 
You must log in or register to reply here.

Similar threads

C
03 Cobra Low Fuel Pressure
  • CTsnake_03
  • Mar 17, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
5
Views
198
1996 - 2004 SN95 Mustang -General/Talk- Mar 24, 2026
CTsnake_03
C
How do we feel about first gen fuel caps?
  • Teen'93stang5.0
  • Apr 25, 2026
  • Mustang Sound & Shine All
Replies
4
Views
290
Mustang Sound & Shine All May 3, 2026
General karthief
N
2005 gt winter driving
  • nataliaisafraid
  • Dec 1, 2025
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
2
Views
145
2005 - 2014 S-197 Mustang -General/Talk- Dec 1, 2025
nickyb
H
Forced Induction On3 Turbo Kit- Parts list NEEDED - 302 Stock Motor
  • Hirothecool1
  • Feb 27, 2026
  • Fox 5.0 Mustang Tech
  • 2
Replies
21
Views
862
Fox 5.0 Mustang Tech Mar 7, 2026
slow84lx
S
F
2004 Mustang GT – Fuel Pump Not Priming
  • Fayio
  • Apr 22, 2026
  • SN95 4.6L Mustang Tech
Replies
7
Views
177
SN95 4.6L Mustang Tech Apr 27, 2026
n0v8or
N
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?