Brake Fluid Temps

[Hrant]

I saw a post by Andie Lin in another car club forum where he had nicely summarized the various dry/wet boiling temps of brake fluids. With his permission, I am posting it below.

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ARRANGED BY DRY BOILING POINT:

DRY:401F -- WET:284F --- DOT3
DRY:446F -- WET:311F --- DOT4
DRY:502F -- WET:343F --- VALVOLINE SYNPOWER
DRY:509F -- WET:365F --- MOTUL 5.1
DRY:527F -- WET:302F --- AP RACING 551
DRY:536F -- WET:392F --- ATE SUPERBLUE/TYP200
DRY:590F -- WET:410F --- AP RACING 600
DRY:590F -- WET:518F --- CASTROL SRF
DRY:593F -- WET:420F --- MOTUL RBF600
DRY:610F -- WET:421F --- NEO-SYNTHETIC SUPER DOT 610


ARRANGED BY WET BOILING POINT:

DRY:401F -- WET:284F --- DOT3
DRY:527F -- WET:302F --- AP RACING 551
DRY:446F -- WET:311F --- DOT4
DRY:502F -- WET:343F --- VALVOLINE SYNPOWER
DRY:509F -- WET:365F --- MOTUL 5.1
DRY:536F -- WET:392F --- ATE SUPERBLUE/TYP200
DRY:590F -- WET:410F --- AP RACING 600
DRY:593F -- WET:420F --- MOTUL RBF600
DRY:610F -- WET:421F --- NEO-SYNTHETIC SUPER DOT 610
DRY:590F -- WET:518F --- CASTROL SRF

Now, let's see you on the track .....

 

[Edo]

Motul I think is the best performance for your dollar you can get. Although I hear Ford HD Brake Fluid is the Budget racer's best choice.

Castrol SRF is like 80 dollars per liter or some insane price..

 

[nsxtasy]

The boiling points of Ford Heavy Duty are not all that high. Its primary advantage is that you can find it at your local Ford dealer. The price difference is highly overrated; you can flush all your fluid using Motul or ATE for about twenty bucks.

Castrol SRF is indeed more expensive by a factor of roughly four, although the fact that it is sold in liter bottles while all others are sold in half-liter or pint bottles tends to exaggerate the difference. SRF's relative immunity to moisture absorption makes it a great choice for a car that is mostly in storage, but doesn't matter as much to track enthusiasts who are likely to flush their fluid more often than the recommended two year intervals.