1) Mitsu 2+2 DOT3

boiling points

450 Dry; 284 Wet

2) Ford Heavy Duty DOT 3

550 Dry; 290 Wet

3) Porsche/BMW Castrol LMA DOT 3/4

Dry 446; Wet 311

 

#2 or #3? Thoughts? Anyone...

 

the porsche fluid wont absorb moisture as quickly(making it better and last longer)
i would just use some high quality stuff like motul if your looking for an alternative to mits. fluid

 

I'm looking for something I can get locally (not have to order)...

Anyone know what they use in Corvettes; Vipers; H2's...

 

I'm a big fan of Motul 600. It made a huge difference in my Z (overweight, underbraked) on the track. I found that I can get it locally (and cheap, <$9 per pint) at a motorcycle shop. You might want to check out bike shops in your area.

Make sure you flush it at least once a year though.

 

I want something that will outlast Motul...

 

I also use Motul RBF600...on the track only! As good as this stuff is, it must be flushed very regularly or else it becomes very corrosive to your braking system. It seems to be even more hygroscopic than the other brands.

For a street car, I would just stick with Valvoline. Costs $2-3 per bottle at any auto parts store and lasts forever. It's not really good enough on the track, but it's great on the street.

Emre

 

What do you mean by "outlast?" Are you talking about better dry boiling point for track use, or better wet boiling point for street use?

Emre

 

outlast => like others say, it must be changed regularly (at least twice a year). Other fluids can last up to 2 years before a change is needed. I agree with others that the Motul 600 is awesome (I use it on my track car).

For reference (as it has not been stated yet) Motul RBF 600 has 593°F dry/420°F wet boiling point.

Another good fluid is ATE® Super Blue (DOT 4); has a dry boiling point of 536F and a wet boiling point of 396F. I use that on my street cars. It is also 1/2 the price of Motul.

 

What if you use motul for daily driving, do you still need to change it twice a year? I've heard changing Motul one a year was ok.

 

If you leave any brake fluid in your car for more than a couple of months, you will accelerate corrosion inside your brake lines and calipers. Motul RBF600 is even worse than other brands in this regard. I tend to change my brake fluid very regularly (several times per year).

Emre

 

I use the Ford quite a bit. Supposedly it absorbs moisture quickly, and with its low wet b.p. you have to change it often. But it's cheap and available so a flush before and after track time is no problem.

Dave

 

What are the respective boiling points of the Valvoline brake fluid ("syn power, full synthetic")?

Found it...

Dry 502; Wet 343 ?

 

Valvoline SynPower Dry: 527 ; Wet: 347

I don't know about those fluids off the top of my head. But I'm sure the Valvoline is much cheaper and more widely available

Emre

 

I'll go with this, I guess...