fire proof brake fluid

[f1rocket]

YES WITH......er I mean yes, with stock seals (at least in my last two Rockets anyway.)

[Brantel]

Same here with stock seals...

Originally Posted by gasman

WITH STOCK SEALS???????

[dforster]

I have been flying with Mobil 1 ATF for a little over 5 years and 340 hours with stock parts. No signs of leaks or seal problems. The flash point of Mobil 1 ATF is quite high, which is what attracted me to use it in the first place (along with endorsements from other builders who had gone before with good results)

[RudiGreyling]

BUMPing the thread!

How you guys and Mobil 1 ATF on stock Vans Parts holding up?

Getting the mil 8xxxx stuf in South Africa is almost impossible, dont want to import, cause it will cost a arm and a lef.

Need to know for my RV10

Rudi

[Brantel]

Rudi,

Been using Mobil 1 Synthetic ATF for almost a year and 90 hrs so far with stock Van's brakes, master cylinders etc. Not so much as a drop of a leak and the brakes work normally. No issues at all.

[jbDC9]

Originally Posted by RudiGreyling

How you guys and Mobil 1 ATF on stock Vans Parts holding up?

I've had Mobil 1 ATF in my Vans stock brake system since day 1, 4 years and 730 hours ago; no leaks, no problems.

[RudiGreyling]

To the Mobil 1 ATF guys...it seems like excellent news!

Last Question: How corrosive is mobile 1 ATF in case you do get a leak or brake line failure to your paint and structure?

[F1R]

With a free castoring nose wheel, a long taxi in a heavy cross wind can cause heating from the prolonged braking on one side. Viton O rings have a much higher temperature rating than Buna N. The Viton seals are harder and less flexible but by the book they are more compatible with the Mobile 1 synthetic ATF.

I have been using the Mobile 1 synthetic ATF fluid in my Rocket for about 50 hours now with no leaks or issues. I have Viton O rings in the wheel cylinders on the right side, and the original Buna N O rings on the left side. Both sides are fine. When I change the tire on the left side, I will install the Viton O rings there as well. Some people have concerns about Viton in colder temps. I have been flying at -15 and -20 a few times with no problems or leaks.

[Guy Prevost]

I have 230 hours on mine and everything is perfect so far. No leaks, no problems. Just finished my second annual. The ATF looks just like it did the day I put it in. This is on an A model too, so I may use brakes a bit more than the tailwheel guys.

ATF is designed to work just fine at high temperatures without attacking the aluminum transmission that it is (normally) contained in. It's viscosity is pretty stable with temperature and its flashpoint is fairly high. It's also available in any small town you might happen to be in. That's a big selling point for me. I didn't want to be like the round-the-world guy stuck in SE Asia trying to figure out what to use for brake fluid.

[eric_marsh]

While we are talking about brake fluid, is anyone aware of a fluid that is compatible with viton seals? The Mobile 1 ATF? Temperature issues won't come into play as this is for a hydraulic clutch.