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Old 06-02-2020, 06:27 PM
XLexusTech XLexusTech is offline
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Default Dot 5.1

Looking at the pros and cons, I quickly eliminated Dot 5 .
THe proice of 5.1 is basically the same as DOT 3/4 with higher biouling point (270 degrees).

So given a bran new brake system with OEM (Detroit speed master) and OEM KORE3 C6 Brake calipers.. I was leaning toward DOT 5.1

Any downside to this decision?
Can it be used for clutch fluid ?

PS the latest thread i found was from 2016 so I did search..
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Last edited by XLexusTech; 06-02-2020 at 06:36 PM.
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Old 06-02-2020, 07:46 PM
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Ketzer Ketzer is offline
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Interested in this also....
You remind me of the timing on a turbo engine...
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Old 06-02-2020, 11:21 PM
randy randy is offline
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Unless you are. Easy racing your car your brake fluid temp will be fine with dot 3 or 4. Remember the rest of your brake system has to withstand those temps. I doubt you will run your car to the extreme and have on racing brake pads. I went with dot 5 which is different than dot 5.1 in the beginning. Iím not running dot 3 or 4. Reg cheap stuff
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Old 06-03-2020, 07:32 AM
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dontlifttoshift dontlifttoshift is offline
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Everything here in the shop gets DOT 4. The cost difference between 3 and 4 is negligible.

Anything that will see track time gets 5.1 It's cheap insurance. You do not need race pads to boil brake fluid.

Support your local hot rod shop!
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Old 06-11-2020, 11:19 AM
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anguilla1980 anguilla1980 is offline
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I've had great luck with Redline RL600 DOT 4, it has a 600F boiling temp.

If Redline made a 5.1 I might switch to that.
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Old 06-11-2020, 08:21 PM
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Panteracer Panteracer is offline
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Default Dot 5.1

Used to run dot 5.1 in my motorcycles all the time
Switched to a dot 5 high temp in my pantera and it was swelling my
Seals. Found out after it locked up my brakes the second time

Now using Dot 4 Fliud per the brake master cylinder rebuilder

Make sure your seals can take 5 or 5.1 fluid

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