Is This The Correct Brake Fluid?


KJRGT

GT Owner
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The 2005 GT Manual gives the following data for Motorcraft Hi Performance Brake Fluid:

DOT 3 PM-1 ESA-M6C25-A.

The Brake Fluid at the Parts Dept. at local Ford Dealer is:

DOT 3 PM-1-C WSS-M6C62-A

Is this the same stuff???:confused
 
Aug 25, 2006
4,436
FYI

When I flush the systems I use Motul or Super Blue as both of these have proven to provide better service life between flushes.

Takes care

Shadowman
 

timcantwell

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FYI

When I flush the systems I use Motul or Super Blue as both of these have proven to provide better service life between flushes.

Takes care

Shadowman

I do the same as Shadowman, Super Blue and Motul. Also, ATE makes a "white" version of the Super blue to assist in the flush/bleed process.
 

Specracer

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+3 I too have changed to Super Blu..... ZERO down side over OEM, only benefits. And as Tim mentions you can swap back and forth Blu to amber (same fluid, only a different color), to be sure you have a 1000% full flush
 
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RALPHIE

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Mar 1, 2007
7,278
What is the capacity of the brake and clutch systems? - in order to purchase a sufficient quantity.
 

AtomicGT

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KJRGT

The GT Boys will be in the neighborhood in 3 weeks, if you want to have them do it. On Bristol above Sunset.
 

Specracer

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I had success with one litre, but I had bought 2 "just in case"

What is the capacity of the brake and clutch systems? - in order to purchase a sufficient quantity.
 

nota4re

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The GT Boys will be in the neighborhood in 3 weeks

Or we're here all of the time for any GT maintenance or performance upgrades.
 

RALPHIE

GT Owner
Mar 1, 2007
7,278
I had success with one litre, but I had bought 2 "just in case"

Thanks! :thumbsup
 

KJRGT

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Thanks for the input fellas on alternative fluids and possible service techs.

Since I've had no problems with the OEM Motorcraft brake fluid while tracking the past three years, I'm just going to stick with what the Ford team went with.

And while the GT Guys are no doubt excellent techs and provide high quality and valued service based upon their nationwide demand, I'll either take this chore head on or re-visit Kendall & Co. (But I will probably go by Bristol when they are here to meet them and some new GT friends. :thumbsup)

So, I sure would love to know if someone can tell me if the brake fluid specs at the Ford dealer are the same as our OEM brake fluid specs in the manual. And if not, it's good to know I can go with Motul or Super Blue.

PS. Getting my new Bridgestone shoes put on next week for Texas! :banana
 

dbackg

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Jan 28, 2009
691
Tempe, AZ
Has anyone tried Amsoil Series 600 Dot 4 brake fluid?
https://www.amsoil.com/storefront/bf4.aspx

I use Amsoil motor oil in my daily drivers. Love the stuff.
 

Fubar

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Yukonranger

GT Owner
Jun 9, 2008
118
Sagle, ID
I also have had no issues with the Ford Motorcraft fluid. I bleed it out before track events. A Ford engineer told me that the Motorcraft fluid was the best DOT 3 fluid availible. He said that the fluid was developed for the Lincoln Continental driver cuising down the freeway with his left foot on the brake pedal (!!!).

The Motorcraft fluid is cheap and readily availible. Has there ever been a case of fluid boiling in a GT with fresh Motorcraft fluid?




Thanks for the input fellas on alternative fluids and possible service techs.

Since I've had no problems with the OEM Motorcraft brake fluid while tracking the past three years, I'm just going to stick with what the Ford team went with.

And while the GT Guys are no doubt excellent techs and provide high quality and valued service based upon their nationwide demand, I'll either take this chore head on or re-visit Kendall & Co. (But I will probably go by Bristol when they are here to meet them and some new GT friends. :thumbsup)

So, I sure would love to know if someone can tell me if the brake fluid specs at the Ford dealer are the same as our OEM brake fluid specs in the manual. And if not, it's good to know I can go with Motul or Super Blue.

PS. Getting my new Bridgestone shoes put on next week for Texas! :banana
 

FENZO

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Jul 7, 2008
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Lafayette, CO
So, I sure would love to know if someone can tell me if the brake fluid specs at the Ford dealer are the same as our OEM brake fluid specs in the manual. And if not, it's good to know I can go with Motul or Super Blue.

M6C62 has low viscosity at lower temps (-30C), but boils at 260C.
M6C25 is normal temp, boils at 288C. Both (I assume) would be acceptable/interchangeable, but M6C25 is in the manual - who is going to drive their GT at 30C (54degF) below freezing?

Motul RBF600 (what I choose to use) boils at 312C, plus it comes in 0.5L bottles which means you can get 3 & get a good flush without waste. The others come in 1L, I find that 2L is too much but 1L is not enough. You should never save brake fluid in a bottle after it is opened as it is hygroscopic (absorbs water in the presence of air:thumbsdow).
 
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Hydra GT

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I have always used Castrol SRF in our old race cars and use that in the GT now.
 

Indy GT

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I recently experienced significant brake fade at the end of a spirited track event in my 07 Shelby which had never had the OE Motorcraft DOT3 fluid changed. I never thought much about boiling the fluid and losing my brakes on the track, until it happened.... Guess either I am getting more comfortable on the track, or more likely the traction control is imputting more heat into the brake system via undetectable differential brake applications.

So I studied and read all that I could on fluid offereings. I really wanted to stay with the OE Motorcraft DOT 3 fluid (C6AZ-19542-AA now superceeded by PM-1C) as it does have a good reputation and is inexpensive. As longtime Forum readers know my position on using the fluids Ford recommends for our GT's. Ford previously had a "super DOT 4" fluid (P/N YS4Z-19542-AA as published in Ford bulletin Q18-2003.doc dated 15 Sept 2003) but it appears this fluid is no longer available.

I spoke directly with one of the GT brake design engineers (now at Brimbo) about the fluid used during development and he indicates all they used was the "regular" DOT 3 Motorcraft fluid. And they had no problems with brake fade due to boiling during the development program.

I will not bore everyone with all the findings but I chose to refresh both my Fords with Motul 600RBF. This aligns with the recommendations of KJRGT and Tim. The Motorcraft DOT 3 fluid meets the Federal mandate minimum "wet" Boiling Point (BP) of 284F. I focus on the wet side fluid boiling temp as that is the more important fluid property after time (and moisture absorption). And at $8.91 list for a 12oz plastic bottle fairly inexpensive.

My research revealed the DOT 4 Castrol GT Low Moisture Absorption (LMA) formulation at $2.99 a 12 oz bottle and 311F wet BP appears superior on both temp capability and price. This is now my fluid in all my daily drivers. Oh and HYDRA GT I would love to use the DOT 4, Castrol SRF in all my cars as well. It has a wet BP of 518F the highest I have seen for ANY brake fluid but at $80 for 33.8 oz I will pass and use the DOT 4 Motul 600RBF at $18 per 500ml and a wet BP of 421F. The DOT 4 ATE Super Blue and ATE Type 200 as recommended by other Forum participants was also good at 396F wet BP and $15 for a 33.8 oz can.

Hope this helps someone.
 
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Fubar

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I have experienced some brake fade situations on stock fluids and it gave me a very high "pucker factor." Now, I usually go from Super Blue to SRF back to Super Blue because it is to easy to confirm that the fluid has moved completely through the system.
 

Specracer

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FYI There is a ATE "super blue that is amber for this very purpose:

http://www.hmsmotorsport.com/store/fluids/brake-fluid/ate-brake-fluid

I have experienced some brake fade situations on stock fluids and it gave me a very high "pucker factor." Now, I usually go from Super Blue to SRF back to Super Blue because it is to easy to confirm that the fluid has moved completely through the system.
 

Indy GT

Yea, I got one...too
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The DOT 4 ATE Super Blue and ATE Type 200 as recommended by other Forum participants was also good at 396F wet BP and $15 for a 33.8 oz can.

Mark, you are correct.

Perhaps I was not clear in the above post. Both ATE fluids referenced above are the same fluids. The "Super Blue" is dyed blue in color and the "Type 200" is natural amber in color. By rotating between the two, you have the same fluid in the system but seeing the color change during the fluid swap assures a full flush. Just a Mark indicates above.
 

Specracer

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If referring to me, I am Andy :biggrin

Just a Mark indicates above .