I came across this statement
on a web site discussing cooling issues with RX-7s:
Use a 30/70 mixture of ethylene glycol and water. Never use
"red" coolant (Dex-Cool) as it is very corrosive to the seals inside
the rotary engine.
I am using about a 30/70 mix of Prestone
“Dex-Cool Approved” and water. From what I read, Dex-Cool was
formulated by GM engineers specifically to give improved cooling and better
corrosion protection for aluminum radiators. I have two custom aluminum
radiators in my airplane, along with some aluminum housings in the
engine. Seemed to me the Dex-Cool formulation was clearly the way to go.
Is the above statement just some bogus
statement based on myth, or does somebody on this list have some
data/experience to support it.
I’ve also been using this stuff in
my old van and XJS for years with no issues.
Al