Thanks guys
Much appreciated.
I’ll flush her out with water.

Steve
On 3 Jun 2014, at 5:46 am, Neil Unger <flyrotary@lancaironline.net> wrote:

> Steve,
>           A lot of times we do things that seem a good idea to make us feel good, and a flush of the cooling system is one.  yes we want the best for the engine, but unless you are changing from Evans coolant to a glycol mix I see little point.  Even with Evans multiple flushes with good old H2O will achieve the same thing.  Main thing to watch is to replace coolant every 3-4 years as is does break down and can do more harm than good if ignored.  I simply flush with hot water if I am very keen with a teaspoon of wetter.  Then again the wetter and the hot water just tells me that I am doing my utmost to look after the engine while possibly achieving nothing that straight cold water will not do eventually.  You can then fill with straight coolant, but the problem with that is that if away from a coolant source you shouldn't add water.  So the old glycol mix is forgiving and it works well.  Neil.
>
> -----Original Message----- From: Stephen Izett
> Sent: Tuesday, June 03, 2014 12:32 AM
> To: Rotary motors in aircraft
> 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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