Mailing List flyrotary@lancaironline.net Message #7285
From: Russell Duffy <13brv3@bellsouth.net>
Subject: RE: [FlyRotary] Re: coolant/water percentage?
Date: Sun, 18 Apr 2004 17:24:17 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>

    "Water Wetter" -  Motor cycle shops have it - expensive.

I used this with distilled water in the rev-1 version, and it worked fine.  That would be my choice for non-winter use.  While it's probably expensive, it's not like you buy that much of it. 

I'm planning on running this stuff  (water with conditioner) during times when freezing level is up above
10 or 12 thousand feet (it's 15K here in Texas in summer), then swap out to
50/50 when cooler OAT and therefore don't need "optimum" cooling.
David

Why do you care what the temp is at 10-12k feet?  Do you think your thermostat will ever close completely at cruise power for long enough to freeze water in your radiator?  Unless you're planning to completely shut down an evap core in cruise, I don't think you will ever need to worry about freezing in flight.

Cheers,
Rusty 
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