• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-

Brakes and Coolant

  • Thread starter Thread starter cjwillwin
  • Start date Start date Jun 10, 2011
C

cjwillwin

New Member
May 9, 2011
20
0
0
Jun 10, 2011
#1
  • Jun 10, 2011
  • #1
My brake light is on and brake fluid is low. Can this be topped off with any brake fluid or does it need to be the same as the last brand?

Same question for coolant (although it's not low).

My buddies mom needs his car and it turns out I'm now driving to Arizona from San Francisco on Monday.

I'm like 90% sure the car will make it, just wanna take care of the loose ends before I start praying.
 

COBRA90GT

Mustang Master
Sep 22, 2001
6,654
0
87
HOCKEYTOWN ® , MI
Jun 10, 2011
#2
  • Jun 10, 2011
  • #2
Quick rule of thumb on mixing brake fluid is to NEVER mix DOT 5 brake fluid with DOT 3 or 4.


Low brake fluid level ?

A) Is the car parked on a flat/level surface?
B) Are there any obvious brake fluid leaks?
C) Are the brake pads worn? Most likely.

The car might very well be in need of new pads (not much pad material left, so the brake fluid has more room to "travel" within the closed system in the brake lines, thus lowering the level of fluid in the master cylinder and triggering the "low fluid" sensor and causing the "brake warning light" on the dash to light up and be displayed).



Sounds like your ride needs a little TLC in the maintenance department, but otherwise, should be OK for a highway cruise?

Might as well check your tire tread/pressures at all 4 corners and the rest of the "essentials" before heading out as well to be on the safe side.
 
D

darkside03gt

Member
Feb 19, 2007
851
8
18
Sacramento CA
Jun 10, 2011
#3
  • Jun 10, 2011
  • #3
What he said.
 

coupeownerBE

Active Member
Aug 20, 2005
110
2
29
russellivlle,ar
Jun 10, 2011
#4
  • Jun 10, 2011
  • #4
+1





COBRA90GT said:
Quick rule of thumb on mixing brake fluid is to NEVER mix DOT 5 brake fluid with DOT 3 or 4.


Low brake fluid level ?

A) Is the car parked on a flat/level surface?
B) Are there any obvious brake fluid leaks?
C) Are the brake pads worn? Most likely.

The car might very well be in need of new pads (not much pad material left, so the brake fluid has more room to "travel" within the closed system in the brake lines, thus lowering the level of fluid in the master cylinder and triggering the "low fluid" sensor and causing the "brake warning light" on the dash to light up and be displayed).



Sounds like your ride needs a little TLC in the maintenance department, but otherwise, should be OK for a highway cruise?

Might as well check your tire tread/pressures at all 4 corners and the rest of the "essentials" before heading out as well to be on the safe side.
Click to expand...
 
C

cjwillwin

New Member
May 9, 2011
20
0
0
Jun 10, 2011
#5
  • Jun 10, 2011
  • #5
Tires are good, just put them on in February and I'll be checking the tire pressure every 4 hours. I'll probably check out the pads, but I don't think I have time to change them <_<
 
B

bdcardinal

tree hugger
Jun 10, 2003
3,612
16
69
santa barbara, CA
Jun 10, 2011
#6
  • Jun 10, 2011
  • #6
cjwillwin said:
Tires are good, just put them on in February and I'll be checking the tire pressure every 4 hours. I'll probably check out the pads, but I don't think I have time to change them <_<
Click to expand...


One thing to remember on your tire pressures that they will increase with heat from driving. The door spec is cold. All you should be checking for while on a road trip is variances between the tires. Generally the rears will be slightly higher, .5-1psi, due to the car being RWD.
 
C

cjwillwin

New Member
May 9, 2011
20
0
0
Jun 11, 2011
#7
  • Jun 11, 2011
  • #7
I thought that heat (such as going from 40 degree CA to 100 degree AZ) would cause tire pressure to rise. DO you not need to bleed the air when making such trips?
 
B

bdcardinal

tree hugger
Jun 10, 2003
3,612
16
69
santa barbara, CA
Jun 11, 2011
#8
  • Jun 11, 2011
  • #8
No just go with it. You are more concerned with consistency over the course of the trip. But always always always whenever possible check pressures cold unless you are open tracking and are using it for alignment diagnosis.
 
C

cjwillwin

New Member
May 9, 2011
20
0
0
Jun 20, 2011
#9
  • Jun 20, 2011
  • #9
In case anyone was wondering I made it their and back. A check engine light came on but it was nothing major, and I didn't die!
 
You must log in or register to reply here.

Similar threads

T
Service Fluid Recommendations for 2015 Paxton Supercharged GT
  • ThotTrap
  • Aug 25, 2025
  • 2015 - 2023 (S550) Mustang -General/Talk
Replies
0
Views
123
2015 - 2023 (S550) Mustang -General/Talk Aug 25, 2025
ThotTrap
T
What's it Worth? 2000 GT
  • Mustang5L5
  • May 8, 2026
  • What is it Worth?!?!?
Replies
6
Views
274
What is it Worth?!?!? Jun 13, 2026
KRUISR
J
2003 convertible front brakes sticking
  • jamesbanasky
  • Jul 9, 2025
  • SN95 V6 Mustang Tech
Replies
2
Views
277
SN95 V6 Mustang Tech Sep 6, 2025
jamesbanasky
J
T
What's it Worth? 2002 GT conv/auto
  • tonydetesta
  • Jan 7, 2026
  • What is it Worth?!?!?
Replies
3
Views
618
What is it Worth?!?!? Jan 21, 2026
Mustang5L5
Fox Brake Pedal
  • Realmongo
  • Nov 5, 2024
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
8
Views
487
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 26, 2025
Realmongo
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -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?