I have always used Castrol DOT 4 in my brake and clutch systems with no problems. Was shopping for some new containers to find that nobody seems to sell Castrol DOT 4 anywhere in the US. I see Pentosin has a Super DOT 4 which looks very high quality.
Anybody have other suggestions they have been successfully using - system is stock brake and clutch with stainless lines and CNC clutch slave.
thanks
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Here is a useful thread...
https://pantera.infopop.cc/top...454#1598208419947454
And some additional information and other fluids I considered:
Brake Fluid Dry Boiling Point Wet Boiling Point Price
AP SUPER 600 590°F 410°F $18.00/16.9oz
CASTROL SRF 590°F 518°F $69.99/33.8oz
NEO SUPER DOT 610 610°F 421°F $15.00/12oz
MOTUL RACING 600 593°F 420°F $15.00/16.9oz
MOTUL DOT 5.1 509°F 365°F $6.50/16.9oz
ATE SUPER BLUE** 536°F 392°F $11.99/33.8oz**
VALVOLINE SYNPOWER 503°F 343°F $4.97/16.9oz
ATE SL 500°F 329°F $7.95/16.9oz
CASTROL LMA 450°F 311°F $3.50/16.9oz
AP 551 528°F 288°F $12.50/16.9oz
Ford C6AZ-19542-AA* 550°F 290°F $6.95/12oz*
* Ford Heavy Duty DOT 3 is very inexpensive and is popular among racers because of its excellent dry boiling point. Considered by many to be the best-kept secret in brake fluids. IT DOES ABSORB MOISTURE QUICKLY THOUGH. Recommended by Baer and Alcon. According to Hot Rods and Horsepower: "Ford Motor Company purchases Castrol SRF by the barrel, repackages it, and sells it as Ford Heavy Duty fluid to owners of heavy-duty trucks. Anyone may buy it from a Ford dealer under part number C6AZ-19542-AA." Although this rumor is often repeated on the 'Net', given the different specs between the two fluids, this assertion seems questionable at best.
** ATE Super Blue DOT 4 is even LESS expensive per ounce than the Ford Heavy Duty brake fluid and ABSORBS MOISTURE SLOWLY! And that’s why I chose it. BUT, I don't think it's available anymore. It seems the Feds didn't like that it was blue. So buy the ATE 200, which is the same thing, but Amber in color.
Thanks for the reply
Yep, switching between blue and amber at each fluid change made determining the flush point easy, but it's DoT regulation that brake fluid be amber, so ATE stopped producing it.
I just bought Pentosin Super DOT 4. I have been using it in my FJ and since the regular Castrol is no longer to be found, Pentosin's specs are very good and it is readily available at NAPA and O'Reilly locally.
Unopened cans of the ATE blue fluid are selling for around $70 on eBay.
🤷♂️
I saw some post saying to get blue dye and put into your brake fluid and it looks cool like ATE. You got to be kidding me.
