X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 20 Jan 2014 14:59:52 -0500 Message-ID: X-Original-Return-Path: Received: from mail-qe0-f48.google.com ([209.85.128.48] verified) by logan.com (CommuniGate Pro SMTP 6.0.8) with ESMTPS id 6694830 for lml@lancaironline.net; Mon, 20 Jan 2014 11:01:42 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.128.48; envelope-from=macinsd@gmail.com Received: by mail-qe0-f48.google.com with SMTP id b4so1438232qen.7 for ; Mon, 20 Jan 2014 08:01:06 -0800 (PST) MIME-Version: 1.0 X-Received: by 10.224.113.204 with SMTP id b12mr28702568qaq.35.1390233666530; Mon, 20 Jan 2014 08:01:06 -0800 (PST) Received: by 10.96.34.163 with HTTP; Mon, 20 Jan 2014 08:01:06 -0800 (PST) In-Reply-To: References: X-Original-Date: Mon, 20 Jan 2014 08:01:06 -0800 X-Original-Message-ID: Subject: Re: [LML] Re: Another take on air filtration From: Bill MacLeod X-Original-To: Lancair Mailing List Content-Type: multipart/alternative; boundary=047d7bea3e20d9363304f068ff43 --047d7bea3e20d9363304f068ff43 Content-Type: text/plain; charset=ISO-8859-1 Adam, What Busch says is true and is to be expected whenever silicone is used in the engine or intake system. Your fresh engine overhaul would certainly explain it. Make up oil does dilute the numbers somewhat, but in your case it's not all that significant. Bill On Sun, Jan 19, 2014 at 11:13 PM, Adam Molny wrote: > Bill - > > > > >Curious though, do you know why the silicon dropped by almost half over > the last 100 hours? > > >The extra 2 quarts of oil might explain it. > > > > I just read an article by Mike Busch saying that the silicone in many > sealants can find its way into the oil and silicone level will drop after a > few oil changes. My engine was freshly rebuilt before the first flight, so > that makes sense. Also, I installed a new prop shortly before my last oil > change. I had to add a quart to make up for the oil that filled the prop > hub. Adding fresh oil dilutes the dirty oil, bringing my numbers down. > However, I think Blackstone takes that into account since they ask for the > amount of make-up oil added between changes. BTW, I change my oil and > filter at 50-hour intervals and typically add 3 quarts between changes. > That works out to 1 quart every 17 hours. > > > > -Adam Molny > --047d7bea3e20d9363304f068ff43 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable

Adam,

What Busch says is true and is to= be expected whenever silicone is used in the engine or intake system. =A0Y= our fresh engine overhaul would certainly explain it.

Make up oil= does dilute the numbers somewhat, but in your case it's not all that s= ignificant.

Bill

On Sun, Jan 19, 2014 at 11:13 PM, Adam Molny <Adam@validationpartners.com> wrote:

Bill -

=A0

>Curious though, do you know why the silicon drop= ped by almost half over the last 100 hours?

>The extra 2 quarts of oil might explain it.

=A0

I just read an article by Mik= e Busch saying that the silicone in many sealants can find its way into the oil and= silicone level will drop after a few oil changes. My engine was freshly rebuilt befo= re the first flight, so that makes sense. Also, I installed a new prop shortly before my last oil change. I had to add a quart to make up for the oil that filled the prop hub. Adding fresh oil dilutes the dirty oil, bringing my numbers down. However, I think Blackstone takes that into account since the= y ask for the amount of make-up oil added between changes. BTW, I change my o= il and filter at 50-hour intervals and typically add 3 quarts between changes. Tha= t works out to 1 quart every 17 hours.

=A0

-Adam Molny<= /u>

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