Hartmut, Again you make sense--good point. One more point you left out--fly your airplane--the best medicine for a long-lasting engine. John
--- On Mon, 4/19/10, Hartmut Beil <[email protected]> wrote: From: Hartmut Beil <[email protected]> Subject: RE: [ercoupe-tech] Camguard To: [email protected], [email protected] Cc: [email protected], "Techlist Ercoupe" <[email protected]> Date: Monday, April 19, 2010, 4:06 AM While Camguard is probably a worthwhile additive, it does not address the problem of our engines. The Lycomings with their high and dry camshafts need this stuff most. In our engine, the cams last long and show little wear, provided everything else is correct. That is because the cam is below the crank and plenty of oil is there for lubrication. So the use of Camguard is not solving a problem here. Our problems are elsewhere. Our engine have the tendency for sticky exhaust valves. I heard and noticed myself that the choice of engine oil is making a difference when it comes to valve sticking. Adding anything to a good engine oil might have diametrical effects. If your additive is boiling at a lower temperature than your engine oil, chances are that your additive gums up the valve stem. I did too many experiments myself and I am having a collection of burnt up valves. Now I stick with good aviation oil that has a high flammable point. Here in Europe we can choose between the US the engine oils like Aeroshell or for example the French product Total Aero. http://www.lubrifia nts.total. fr/lub/lubfrance total.nsf/ VS_OPM/C12575140 0364185C125701B0 04564AC?OpenDocu ment The guys at our airport swear that valve sticking had been eliminated with the use of Total Aero. So I would say, save your money on the Camguard. Buy good engine oil instead and change it often. Hartmut CC: pm3...@yahoo. com; ercoupe-tech@ yahoogroups. com To: heave...@wt. net From: djcalie...@mac. com Date: Sun, 18 Apr 2010 21:04:08 -0500 Subject: Re: [ercoupe-tech] Camguard Aviation Consumer did a piece on aviation oil and bottom line: Their first choice was Phillips multiviscosity (XC I think) plus Cam Guard. They also looked into oil additives few years ago and Cam Guard was the only one they could say actually did something. Dan C On Apr 18, 2010, at 7:06 PM, heave...@wt. net wrote: I would. I am not using Camguard myself because I started using AVBlend on my C-75 years before Camguard was FAA approved, and I don't feel like changing now. Oil additives are a controversial subject. By all means, listen to everybody before you make your own decision. Have you asked your A&P for his opinion? Eliacim --- pm3...@yahoo. com wrote: From: Bob Stearns <pm3...@yahoo. com> To: Ercoupe Tech Forum <ercoupe-tech@ yahoogroups. com> Subject: [ercoupe-tech] Camguard Date: Sun, 18 Apr 2010 15:10:53 -0700 (PDT) Should I use this in my C85-12 w/O200 STC? Hotmail: Trusted email with powerful SPAM protection. Sign up now.
