Steve, I work in the automotive repair industry & would not recommend use of flush chem. unless you had a trans cooler fail in the rad. of the car allowing trans fluid to enter cooling sys. or someone dumped eng. oil in or brake fluid in ( I've seen them all ) You have a newer eng. if you are changing type of coolant, flush with water only. Chems. eat everything at a controlled pace that is why they do not want you to leave in for long time.  David R. Cook RV6A Rotary,, 38 hrs. & flying regularly again.

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From: "Stephen Izett" <flyrotary@lancaironline.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Monday, June 2, 2014 10:32:16 AM
Subject: [FlyRotary] engine flush

Hi guys
Before installing a new expansion tank thought i would give the engine cooling system a good flush.
A have a bottle of stuff but before i use it wondered if rotaries and their o-rings could be damaged by the such chemicals?

Thanks
Steve Izett
Renesis 4-port.
 
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