Dealer recommends brake fluid replacement at 30k miles for $350, comment?

Mach-Lee

Well-Known Member
First Name
Lee
Joined
Jul 16, 2021
Threads
262
Messages
11,382
Reaction score
25,073
Location
Wisconsin
Vehicles
2022 Mach-E Premium AWD
Occupation
Sci/Eng
Country flag
I have seen other posts on merits on whether this is really needed. The SF bay area is not very humid, advisor indicated this is not on Ford's maintenance schedule, but a dealer recommendation (?!). Seems pricey for something that I'm not sure is really needed. I know all cars are different, but my 2007 Prius went over 220k miles without needing any brake work. I got the advisor to agree that the best course of action is to see if they find anything at the 30k service inspection before deciding whether the brake fluid change is required, comments?
Brake fluid should be done every 3-6 years depending on how humid it is where you live (it lasts longer in dry climates). It's best to test the moisture and change it based on that to prevent unnecessary fluid changes.

Mine is still dry after 3 years, I check it annually and replace once I see moisture showing up on the tester.

Here is a map of average dew point. You can see if you're in South Florida, you'd want to adhere to the every 3-year schedule, but if you live in the Rockies, you'd probably be able to stretch it to 6+ years.

Ford Mustang Mach-E Dealer recommends brake fluid replacement at 30k miles for $350, comment? Mean%20Dew%20Point%20Temperature%20(Annual)
Sponsored

 

BullittHitsTheBone

Active Member
First Name
Bob
Joined
Jul 8, 2025
Threads
3
Messages
33
Reaction score
11
Location
California
Vehicles
2025 Mach-E Premium
Occupation
Retired
My question would be: "What exactly does 'brake fluid replacement' entail?'" You can replace the fluid in the reservoir with a suction device--think large syringe, or a turkey baster for that matter--in a few minutes. A true flush requires bleeding at all four corners, either pressure or vacuum and probably close to a quart of fluid (it's the fluid in the lines that is subject to heat degradation; moisture isn't the only issue). Sometimes, bleeding for a good pedal requires the old 'pump the pedal and hold' method, and two people. Current shop rates are around $150/hr in metro areas and most have an hour minimum (which isn't grossly out-of-line). Used fluid should be disposed of in an environmentally sound way ($$$).
 

GreaseMonkey

Well-Known Member
First Name
Steve
Joined
Oct 3, 2021
Threads
22
Messages
3,290
Reaction score
5,311
Location
Chicago, IL
Vehicles
24 Mach-E GT
Country flag
Brake fluid should be done every 3-6 years depending on how humid it is where you live (it lasts longer in dry climates). It's best to test the moisture and change it based on that to prevent unnecessary fluid changes.

Mine is still dry after 3 years, I check it annually and replace once I see moisture showing up on the tester.

Here is a map of average dew point. You can see if you're in South Florida, you'd want to adhere to the every 3-year schedule, but if you live in the Rockies, you'd probably be able to stretch it to 6+ years.

Mean%20Dew%20Point%20Temperature%20(Annual).png
Which tester do you use, Lee? Most i’ve seen have reviews say that they are unreliable.
 

Teslaeata

Well-Known Member
First Name
Mark
Joined
Sep 28, 2022
Threads
9
Messages
3,470
Reaction score
4,210
Location
Nottingham, England, UK
Vehicles
Red June ‘21 RWD ER Premium MME
Occupation
Forensic vehicle examiner, motor insurance assessor, expert witness
Country flag
Brake fluid should be done every 3-6 years depending on how humid it is where you live (it lasts longer in dry climates). It's best to test the moisture and change it based on that to prevent unnecessary fluid changes.

Mine is still dry after 3 years, I check it annually and replace once I see moisture showing up on the tester.

Here is a map of average dew point. You can see if you're in South Florida, you'd want to adhere to the every 3-year schedule, but if you live in the Rockies, you'd probably be able to stretch it to 6+ years.

Mean%20Dew%20Point%20Temperature%20(Annual).png
Point me to that in Ford’s service schedule, if you would, please.
 


Teslaeata

Well-Known Member
First Name
Mark
Joined
Sep 28, 2022
Threads
9
Messages
3,470
Reaction score
4,210
Location
Nottingham, England, UK
Vehicles
Red June ‘21 RWD ER Premium MME
Occupation
Forensic vehicle examiner, motor insurance assessor, expert witness
Country flag
It
My question would be: "What exactly does 'brake fluid replacement' entail?'" You can replace the fluid in the reservoir with a suction device--think large syringe, or a turkey baster for that matter--in a few minutes. A true flush requires bleeding at all four corners, either pressure or vacuum and probably close to a quart of fluid (it's the fluid in the lines that is subject to heat degradation; moisture isn't the only issue). Sometimes, bleeding for a good pedal requires the old 'pump the pedal and hold' method, and two people. Current shop rates are around $150/hr in metro areas and most have an hour minimum (which isn't grossly out-of-line). Used fluid should be disposed of in an environmentally sound way ($$$).
It should involve purging the old fluid right out the system and out the bleed screw at each brake wheel unit by pumping new fluid from the reservoir.

Diagnostic kit is required to do this for newer cars such as ours.

Changing the fluid in the reservoir does not change the fluid in the hydraulic lines right down to the brake wheel units where the moisture in the fluid will heat and vaporise with the consequent effect of brake failure in conditions of heavy, prolonged braking when brake fluid has become “wet”.

There are professional bits of kit that can test the boiling point of the brake fluid but that’s only the fluid you can draw from the reservoir so you never know the boiling point of the fluid in the lines close to the brake wheel units hence the maker’s fluid change period.

Ford Mustang Mach-E Dealer recommends brake fluid replacement at 30k miles for $350, comment? IMG_9331
 

SteveMach-ee

Well-Known Member
First Name
Steve
Joined
Nov 6, 2024
Threads
1
Messages
132
Reaction score
172
Location
Mass
Vehicles
2021 MME Select AWD, 2023 Ariya Venture+
Brake fluid should be done every 3-6 years depending on how humid it is where you live (it lasts longer in dry climates). It's best to test the moisture and change it based on that to prevent unnecessary fluid changes.

Mine is still dry after 3 years, I check it annually and replace once I see moisture showing up on the tester.

Here is a map of average dew point. You can see if you're in South Florida, you'd want to adhere to the every 3-year schedule, but if you live in the Rockies, you'd probably be able to stretch it to 6+ years.

Mean%20Dew%20Point%20Temperature%20(Annual).png
Does anyone use a tester like this? https://www.amazon.com/KAIWEETS-Corrosion-Resistance-High-Precision-Calibrated/dp/B0D9M279V9 , Seems to be same price as test strips.
 

dalola

Well-Known Member
First Name
Dave
Joined
Nov 18, 2024
Threads
10
Messages
589
Reaction score
736
Location
SE Ohio
Website
sunsetridgecabinhockinghills.com
Vehicles
24 Mach-E P4X, 24 Bronco Big Bend Sas, 22 Maverick Lariat FX4 4K, & Hot Rods
Occupation
Retired 🇺🇸
I have seen other posts on merits on whether this is really needed. The SF bay area is not very humid, advisor indicated this is not on Ford's maintenance schedule, but a dealer recommendation (?!). Seems pricey for something that I'm not sure is really needed. I know all cars are different, but my 2007 Prius went over 220k miles without needing any brake work. I got the advisor to agree that the best course of action is to see if they find anything at the 30k service inspection before deciding whether the brake fluid change is required, comments?
If you have long term ownership plans, or a concern for the next owner, it's good practice to flush brake fluid every 2-3 years, regardless of where you live, or how/how much you drive.

Consider a quart bottle of DOT4 LV is $20-30 (check the expiration date on the bottle). A quality air compressor powered vacuum bleeder is ~$150. An hour of your time. The only fluid left behind is in the ABS solenoids. Most dealers will not do a computer bleed, where the ABS solenoids are cycled, even tho this is the "required" service. Doing it at 2-3 year intervals negates the need to cycle the solenoids during bleeding, assuming they are cycled occasionally during normal driving. (easy to do in winter driving)

Following this method/schedule, you should never have a fluid related problem for the life of the car. You may never anyway, even if you do nothing.

Place your bet accordingly.
 

BullittHitsTheBone

Active Member
First Name
Bob
Joined
Jul 8, 2025
Threads
3
Messages
33
Reaction score
11
Location
California
Vehicles
2025 Mach-E Premium
Occupation
Retired
It

It should involve purging the old fluid right out the system and out the bleed screw at each brake wheel unit by pumping new fluid from the reservoir.

Diagnostic kit is required to do this for newer cars such as ours.

Changing the fluid in the reservoir does not change the fluid in the hydraulic lines right down to the brake wheel units where the moisture in the fluid will heat and vaporise with the consequent effect of brake failure in conditions of heavy, prolonged braking when brake fluid has become “wet”.

There are professional bits of kit that can test the boiling point of the brake fluid but that’s only the fluid you can draw from the reservoir so you never know the boiling point of the fluid in the lines close to the brake wheel units hence the maker’s fluid change period.

All good info. But, point being, what will a dealer actually DO? I can see some of them just replacing the fluid in the reservoir and charging $300. Am I just too cynical?
 

Teslaeata

Well-Known Member
First Name
Mark
Joined
Sep 28, 2022
Threads
9
Messages
3,470
Reaction score
4,210
Location
Nottingham, England, UK
Vehicles
Red June ‘21 RWD ER Premium MME
Occupation
Forensic vehicle examiner, motor insurance assessor, expert witness
Country flag
They shou
All good info. But, point being, what will a dealer actually DO? I can see some of them just replacing the fluid in the reservoir and charging $300. Am I just too cynical?
They should do what they’re supposed to do and we should be able to rely on them to do that and the suspicion they won’t isn’t good enough excuse not to allow them to do what they’re supposed to do at the correct intervals.
 

dalola

Well-Known Member
First Name
Dave
Joined
Nov 18, 2024
Threads
10
Messages
589
Reaction score
736
Location
SE Ohio
Website
sunsetridgecabinhockinghills.com
Vehicles
24 Mach-E P4X, 24 Bronco Big Bend Sas, 22 Maverick Lariat FX4 4K, & Hot Rods
Occupation
Retired 🇺🇸
All good info. But, point being, what will a dealer actually DO? I can see some of them just replacing the fluid in the reservoir and charging $300. Am I just too cynical?
Sadly, for every dealer that does it correctly, there are probably ten that won't. My own opinion, from life experience, based on zero statistics.

Unless you watch them do it, assume it's half-ass. That's why I do my own. Feel free to disagree. 🤠
 

byoungblood

Well-Known Member
First Name
Bart
Joined
Feb 17, 2022
Threads
1
Messages
158
Reaction score
117
Location
Berryville, VA
Vehicles
2012 F150, 2007 Mazda 3, 1999 Jeep Wrangler
Country flag
Yes, brake fluid change is a requirement.

UK is 2 years but I get it for c£70, it’s not a massive job, think you Americans are being shafted.
Our dealers LOVE to prey on the unwary.

Even a lot of private shops are silly high for minor jobs, probably because they're tens of thousands of dollars in debt to the tool truck guys.
 

shark

Well-Known Member
First Name
David
Joined
Jul 18, 2021
Threads
22
Messages
326
Reaction score
515
Location
Texas
Vehicles
Mach E GT
Country flag
I would never take any vehicle I own to the dealer for routine service like fluid changes unless it was 100% covered under warranty. They don't have Jiffy Lube in SF?
 

Teslaeata

Well-Known Member
First Name
Mark
Joined
Sep 28, 2022
Threads
9
Messages
3,470
Reaction score
4,210
Location
Nottingham, England, UK
Vehicles
Red June ‘21 RWD ER Premium MME
Occupation
Forensic vehicle examiner, motor insurance assessor, expert witness
Country flag
Our dealers LOVE to prey on the unwary.

Even a lot of private shops are silly high for minor jobs, probably because they're tens of thousands of dollars in debt to the tool truck guys.
We’ve all been there, brother, in debt to the tool truck guys that is - Snap-On I seem to remember from my apprenticeship.
Sponsored

 
 







Top