From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of Kelly Troyer [keltro@gmail.com]
Sent: Saturday, October 06, 2012 2:51 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: colder spark plugs
Steve,
Are these -10 plugs NGK ?.............My memory fails me as I do not recall stock -10 heat range............
I also much appreciate your unpaid and freely shared research............