Author Topic: What Dot 4 brake fluid  (Read 361 times)

Offline slowmover

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What Dot 4 brake fluid
« on: May 19, 2022, 05:25:33 PM »


What matches the manuals specs that doesn’t have to shipped from overseas?
« Last Edit: May 19, 2022, 05:29:59 PM by slowmover »

Offline Perazzimx14

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Re: What Dot 4 brake fluid
« Reply #1 on: May 19, 2022, 06:25:27 PM »
I have no problem using SuperTech DOT4 or Prestone DOT4. You can buy DOT4 that is 5X as costly, but it does nothing different than any other DOT4.
It's the ones who've cracked that the light shines through!

Offline sdcr

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Re: What Dot 4 brake fluid
« Reply #2 on: May 19, 2022, 07:25:19 PM »
I’m in a similar situation as slowmover. 

I’m in the process of resurrecting a old R100 airhead BMW. What Dot 4 brand/spec would you suggest for this bike?

I have no problem using SuperTech DOT4 or Prestone DOT4. You can buy DOT4 that is 5X as costly, but it does nothing different than any other DOT4.
John
2000 BMW R1100 RS
1983 BMW R100 S
2009 Jaguar XK

Offline Antietam Classic Cycle

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Charlie

Wildgoose Chase Moto Guzzi

Re: What Dot 4 brake fluid
« Reply #3 on: May 19, 2022, 08:40:28 PM »

Offline sdcr

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John
2000 BMW R1100 RS
1983 BMW R100 S
2009 Jaguar XK

Offline old head

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Re: What Dot 4 brake fluid
« Reply #5 on: May 19, 2022, 09:27:45 PM »
I use supertec Dot4, have been for years.  Haven't had an issue.

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Offline slowmover

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Offline mechanicsavant

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Re: What Dot 4 brake fluid
« Reply #7 on: May 20, 2022, 08:05:55 AM »
As long as it meets spec. I don’t see an issue . IMHO the important thing is to change it @ regular intervals as it’s hydroscopic . H2O very bad , at least in a brake system .

Offline Perazzimx14

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Re: What Dot 4 brake fluid
« Reply #8 on: May 20, 2022, 08:13:37 AM »
As long as it meets spec. I don’t see an issue . IMHO the important thing is to change it @ regular intervals as it’s hydroscopic . H2O very bad , at least in a brake system .

Isn't "DOT4" pretty much the spec?
It's the ones who've cracked that the light shines through!

Offline mechanicsavant

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Re: What Dot 4 brake fluid
« Reply #9 on: May 20, 2022, 10:50:08 AM »
Yeah pretty much . I’ve seen different brands w/catch phrases like “heavy Duty” or “High Performance “my fav was “As used in NASCAR”

Offline Perazzimx14

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Re: What Dot 4 brake fluid
« Reply #10 on: May 20, 2022, 12:03:00 PM »
Yeah pretty much . I’ve seen different brands w/catch phrases like “heavy Duty” or “High Performance “my fav was “As used in NASCAR”

Buzz words and/or phases that get people to spend more for the same thing. Marketing genius :thumb:

It's the ones who've cracked that the light shines through!

Offline s1120

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Re: What Dot 4 brake fluid
« Reply #11 on: May 21, 2022, 07:24:50 AM »
Really ive never had a issue with any brand DOT4. I use whatever name brand I can get at the time, and just dont keep the opened bottle for decades on the shelf. It absorbs water over time when open. Other then that, just change it once in a while.
Paul B

Offline Perazzimx14

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Re: What Dot 4 brake fluid
« Reply #12 on: May 21, 2022, 07:34:19 AM »
Really ive never had a issue with any brand DOT4. I use whatever name brand I can get at the time, and just don't keep the opened bottle for decades on the shelf. It absorbs water over time when open. Other then that, just change it once in a while.

This is another reason I like SuperTech. A pint is under $5 (three months ago it was under $3) so I don't feel guilty when I use 1/2 a bottle on a brake flush/bleed and toss what's leftover. If I bought a $20 bottle of brake fluid I'd feel compelled to hang onto any leftover so I didn't feel like I was throwing a Hamilton away.

 
It's the ones who've cracked that the light shines through!

Offline mechanicsavant

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Re: What Dot 4 brake fluid
« Reply #13 on: May 22, 2022, 06:41:28 AM »
But it was used in NASCAR , guaranteed to add HP & shorten stopping distance ! Vince promises & a free sham-wow !!

Offline Mike Tashjian

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Re: What Dot 4 brake fluid
« Reply #14 on: May 22, 2022, 06:46:59 AM »
Bosch ESI6-32N Brake Fluid (Direct Replacement for DOT 3, DOT 4, and DOT 5.1) - 1 Quart.  I have been buying this for the last few years.  It is working well and goes in everything I own. 

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