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Amen to this system. I tried both ways and went to the pressurized recovery bottle. No problems since then. With the "auto" system, I was always losing fluid into the bottle and not being able to suck it all back after cool down.
I have a valve to pre-pressurize the system to about 10 psi so my EIS won't keep winking it's red eye at me during warm up.
Bill Eslick
235 hours
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The advantages of the old Mazda system are: it will return all of the coolant in the bottle to the engine in case of a leak. You get nothing back from the "car" system until the plane is on the ground and cold. This system is much better at removing air from an operating system. The weights are about the same for both. You can still find them in the junk yards but you can make one if you want. You can mount either system anywhere. They don't need to be higher than anything to work. The car system is just a little less well off when mounted low but not a problem, but it is open to ambient. The Mazda bottle can be mounted anywhere so long as it is upright. And "anywhere" can be a real handy location.
Lynn E. Hanover
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