From: "Marc Wiese cardmarc@charter.net" Received: from pmg.Logan.com ([207.170.160.161] verified) by logan.com (CommuniGate Pro SMTP 6.5.3) with ESMTPS id 4454918 for flyrotary@lancaironline.net; Sat, 13 Dec 2025 11:47:34 -0500 Received: from pmg.Logan.com (localhost [127.0.0.1]) by pmg.Logan.com (Proxmox) with ESMTP id C78BC31256 for ; Sat, 13 Dec 2025 11:47:34 -0500 (EST) Received-SPF: pass (charter.net: 47.43.20.25 is authorized to use 'cardmarc@charter.net' in 'mfrom' identity (mechanism 'ip4:47.43.20.0/24' matched)) receiver=pmg.Logan.com; identity=mailfrom; envelope-from="cardmarc@charter.net"; helo=impout001.msg.chrl.nc.charter.net; client-ip=47.43.20.25 Received: from impout001.msg.chrl.nc.charter.net (impout001aa.msg.chrl.nc.charter.net [47.43.20.25]) by pmg.Logan.com (Proxmox) with ESMTPS for ; Sat, 13 Dec 2025 11:47:31 -0500 (EST) Received: from HomeDesktop ([68.184.182.131]) by cmsmtp with ESMTPA id USm9vFUNOIN6bUSmAvHO5h; Sat, 13 Dec 2025 16:47:24 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=charter.net; s=c20240129; t=1765644444; bh=6MgwJoiJT2IAnstmN1PL/d4ozjvOOnTH+bjf76PWqIk=; h=From:To:References:In-Reply-To:Subject:Date; b=Q+U+2HtsxCOlR8NE78dDvpRon7hSVYS0N2oy2xYlhEJRwWvR9SJmU/X6B99e6f7fi vZRSvgbOr/aJxavNcTVfWKzgWZ1rmqKJWJ7AOee62V2iaG2pej+7yj69V2ar69KsBl 5JUIaW/6AbXlza+6mL21JN3PF0Vp/KKhBU7HPqY+xFr9CXvF973hyx9ErD4okjcOKs yxlXOmX9qaCiC1A2dS5TPx1ZfBgZ01NYmOVAVSezyKjOKOhWq9H/qGLAuqSpB56sFb C6kpt47BhBTVKD24s35NoLLjuibIgLKs47NwJKJq0hupTATh0h24ZQhXawUMhza2TI XQfTv+8EXXIgg== Authentication-Results: charter.net; auth=pass (LOGIN) smtp.auth=cardmarc@charter.net X-Authority-Analysis: v=2.4 cv=MehquY/f c=1 sm=1 tr=0 ts=693d989c a=qoXC88jkgkm1v/IAzpf30Q==:117 a=qoXC88jkgkm1v/IAzpf30Q==:17 a=DAwyPP_o2Byb1YXLmDAA:9 a=7g1VtSJxAAAA:8 a=Ia-xEzejAAAA:8 a=o1OHuDzbAAAA:8 a=ILcR1NvinY-Z9ndF5nwA:9 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=yMhMjlubAAAA:8 a=SSmOFEACAAAA:8 a=51VuaEvIR6W1DAz_mx4A:9 a=71WZfeCPOyVlXdzr:21 a=gKO2Hq4RSVkA:10 a=UiCQ7L4-1S4A:10 a=hTZeC7Yk6K0A:10 a=frz4AuCg-hUA:10 a=lqcHg5cX4UMA:10 a=grOzbf7U_OpcSX4AJOnl:22 a=Urk15JJjZg1Xo0ryW_k8:22 To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: Best chemical for stuck apex seals Date: Sat, 13 Dec 2025 10:47:18 -0600 Message-ID: <007e01dc6c50$27beee40$773ccac0$@charter.net> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_007F_01DC6C1D.DD24F370" X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQDsSkbrVoWjFK+qOuYIPmQ9JbZ5HbcACwww Content-Language: en-us X-CMAE-Envelope: MS4xfKt7OJtT+/1oRhPS4iB8Y91CU26g8okJVIt1UvwT5NJgF3U1tW3KgyaUAB5fMTNrpeM8b25x7avDyGURwrvbssFpwKCj31eYULxz7wjRAMq/V+aSQ8My 4qG3aK1lHP8ehm73LDBHF/DAuO8FyXzG2gKvWYmT8hQ1hukkai+tfkGUlm78BOIiBP20/g3RUMNGagqzKxGA/mcY77E7SweZZFg= X-SPAM-LEVEL: Spam detection results: 0 AWL -0.861 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DKIM_SIGNED 0.1 Message has a DKIM or DK signature, not necessarily valid DKIM_VALID -0.1 Message has at least one valid DKIM or DK signature DKIM_VALID_AU -0.1 Message has a valid DKIM or DK signature from author's domain DKIM_VALID_EF -0.1 Message has a valid DKIM or DK signature from envelope-from domain DMARC_MISSING 0.1 Missing DMARC policy FREEMAIL_FROM 0.001 Sender email is commonly abused enduser mail provider HTML_FONT_SIZE_HUGE 0.001 HTML font size is huge HTML_MESSAGE 0.001 HTML included in message KAM_MXURI 1.5 URI begins with a mail exchange prefix, i.e. mx.[...] RCVD_IN_HOSTKARMA_BL 1.5 Sender listed in HOSTKARMA-BLACK SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record WEIRD_PORT 0.001 Uses non-standard port number for HTTP This is a multipart message in MIME format. ------=_NextPart_000_007F_01DC6C1D.DD24F370 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Mouse Milk (as sold by Spruce) is also very effective. Marc =20 From: Rotary motors in aircraft=20 Sent: Saturday, December 13, 2025 7:13 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Best chemical for stuck apex seals =20 Finn:=20 Try some Marvel-Mystery oil. Its should be safer on the rubber corner = seals than carb cleaner. Never used it in a rotary but it did the trick for us when when had = sticky valves and ring in the Lycomings and Continentals. The secret ingredient is Wintergreen Oil (Methyl Salicylate) that's both = a solvent and a lubricant. Additionally, Valvoline Restore and Protect has worked well to free up = sticky oil wiper ring issues on late model Volvo engines that have a = known problem with overly tight oil ring groves. "a synthetic motor oil designed to actively clean engines, remove up to = 100% of deposits with continuous use, and prevent future buildup"=20 Mike in Maine =20 =20 =20 =20 On Fri, Dec 12, 2025 at 5:44=E2=80=AFPM Finn Lassen = finn.lassen@verizon.net = > = wrote: I'm finally getting around to getting my RV-3B with its 13B flying=20 again. Hasn't flown for 4 years or more. I can turn the engine by hand but several of the apex seals are stuck -- = won't move (back out) when pushing with a wood rod through leading=20 sparkplug holes. What's the best to spray in there to loosen them up/? WD-40? I'm reluctant to use carb or brake cleaner -- might they degrade the=20 rubber corner seals or maybe o-rings? Finn -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_007F_01DC6C1D.DD24F370 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Mouse Milk (as = sold by Spruce) is also very effective.

Marc<= /span>

 

From:<= /b> = Rotary motors in aircraft
Sent: Saturday, December 13, 2025 = 7:13 AM
To: Rotary motors in aircraft = <flyrotary@lancaironline.net>
Subject: [FlyRotary] Re: = Best chemical for stuck apex seals

 

Fin= n: 

Try= some Marvel-Mystery oil. Its should be safer on the rubber corner seals = than carb cleaner.

Nev= er used it in a rotary but it did the trick for us when when had sticky = valves and ring in the Lycomings and = Continentals.

The= secret ingredient is Wintergreen Oil (Methyl Salicylate) that's both a = solvent and a lubricant.

Add= itionally, Valvoline Restore and Protect has worked well to free up = sticky oil wiper ring issues on late model Volvo engines that have a = known problem with overly tight oil ring = groves.

&qu= ot;a synthetic motor oil designed to actively clean engines, remove up = to 100% of deposits with continuous use, and prevent future = buildup"

Mik= e in Maine

 

 

 

 

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