Mobil 1 synthetic ATF specs are almost identical to Aeroshell Fluid 31 (I've checked). Available at Walmart.
Best way to bleed is to connect a tube to the reservoir which goes into a container of fluid to capture overflow and use a pressure can to bleed the system with a significant volume of fluid, from the bottom up. I made a pressure can with a valve and some fittings on an old solvent can. It connects to shop air, turn the valve on and go. Just used this setup on a J3 last weekend on which I swapped the expander brakes with Grove disc brakes. It took me about 30 seconds to bleed each side. Completely foolproof.
I seem to remember someone writing about how they used an ordinary plastic garden sprayer (for fertilizers/weed killers, available at any home improvement store) as a pressure vessel by attaching an appropriate hose to the end. Fill it with fluid, connect it to the nipple, pump it up, and squeeze the trigger. What a GREAT idea!
Uh...I think you answered your own question!
I use an even simpler method - an old fashioned pump type oil can (harbor freight - $1.99 special) with a short piece of clear plastic hose (Home Depot Aviation Department $0.20) that runs from the oil can to the bleed valve. Simply pump the oil and watch in the clear tube that no air bubles get into the system.
I'm sorry to seem so dense. If there are no obvious risks in using Mobil 1 Synth ATF as brake fluid in an RV, then great!
I just thought I might be jumping into another situation where I create my own problems--like when I had HC pistons forged and bought an electronic ignition before knowing enough to even wonder about prop vibration and resonance. Now, I know and accept certain risks in running my particular engine/prop combo.
With regard to brake fluid, I was curious whether others knew about certain risks in using Mobil 1 Synth ATF as brake fluid and accepted those risks? Or, in the alternative, whether there are no obvious risks in using Mobil 1 Synth ATF as brake fluid? I should have just asked that, huh?
Just to clarify my earlier post, I don't know what properties are significant when selecting a brake fluid. The ones listed above, in my previous post, may or may not be significant. And, there may be many other more significant properties to consider when selecting a brake fluid than the ones I listed.
Thanks in advance! I learn a lot here.
Sorry Monte, I was being cute.
I'm unaware of any downsides. I have been using it most of the year and the other guys here in Indy have been using it for years without any known effects. It's even red like the the other stuff so your friends won't know unless you tell them.