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While the wear reduction is great but I have found keeping the ring grooves and valve guides free of deposits even more valuable, after preventing rust. Add Camguard at 5% or 1.6 ounces per quart of oil. One bottle (16oz) treats 10 quarts of oil. I also preblend 1.5-2 ounces into quarts of...

It' a shame that Lycoming used exactly the same profile as the flat tappet cam. Ed Edward Kollin Technical Director Aircraft Specialties Lubricants

This picture freaked out the 15 Lycoming engineers that saw it during a 3 hour lecture I gave them. This was from an engine that had 300 hours over a year and a half. The engine was torn down because of a prop strike. Roller cams are not the solution to the Lycoming valve-train problem. Ed...

Shell oils do contain any of the additives in Camguard. As soon as Camguard was certified, Shell asked to have a meeting. The wanted exclusive rights to put Camguard technology in there oil. However, they didn't want to pay for it and we declined their offer. Camguard is available in the UK...

Yes, there are three. 1) No deposit formation see figure 1, clean piston 540 hours from our aerobatic certification engine 2) Reduced wear an average of 30% lower iron, nickel and chromium Fig.2 wear test 3) Reduced weeping of seals. Reduces oil weeping over the first oil change. You can...

Tom, Thanks, this information is mostly accurate. I thought you might find this interesting, the Continental Service Center is now a Camguard dealer. Ed

Did you do a mag check? It looks like a bad plug to me. Looks the same when I perform a LOP mag check. I've seen both the EGT and CHT drop with a partially plugged injector when running LOP. Ed

IF the o-ring is not damaged try this. Place it in a small metal container, cover it with Camguard and place it in the oven for two-three hours at the lowest temperature possible 150-200F. Ed Edward Kollin Technical Director Aircraft Specialties Lubricants

I only meant that aromatics, olefins, oxygenates, etc. are not considered additives and "additive" treat rates are typically less than 1%. Mogas is notoriously unstable due to the olefin's (alkenes) and while it does not have to contain any of these stinky molecules the commodity pressures...

Your terminology is unusual. Mogas typically is made up of hydrocarbons in the C4-C9 range and include normal paraffin’s 10-15% (low octane & stable), isoparaffins 35-45% (high octane & stable), cycloparaffins 10-15% (low to high octane & stable), aromatics 20-35% (high octane & stable), olefins...

It is difficult to say. Factors that enter in to it are type of engine, HP rating, oil consumption, use (high/low HP cruse, aerobatics etc.), CHT's, mixture settings and the propensity to build combustion chamber deposits. In aircraft it is just not worth the risk. Ed

A diesel oil would keep aircraft engines VERY clean with 3 times the dispersant and neutral and overbased detergents. It would eliminate deposits and lead problems. They would work very well in most aircraft engines and are used successfully in some Lycomings in air boats. They would work...

Originally Posted Lycoming Service Instruction 1014M All turbocharged engines must be broken-in and operated with ashless dispersant oil only. The Lycoming engineers have come to the realization that; 1) Essentially all deposits in the engine come from fuel entering the crankcase...

I also have not heard of any water (emulsifying) issues with the Elite. Regards, Ed

I made a mistake in the above, the Phillips A 100AW straight 50 weight oil DOES contain the LW-16702 additive and therefore would meet the SB. There have no intention of adding it to their mutiweight oil. They didn't say why.

Phillips 20W-50 oil does NOT meet the Lycoming SB 446D. You have to add the LW-16702 (bTPP). As a matter of fact NO Phillips oil meets the SB. They are currently reformulating their oil mainly in response to Camguard an additive package for aircraft oils. Shell and Exxon add the phosphate...

The following sentence should read; Along with the copper corrosion Lycoming is seeing some seal degradation but they're blaming it on people adding the LW-16702 additive to Shell additized oils doubling the concentration of bTPP, at least that is the story they're sticking with. Sorry for...

What does somewhat higher numbers mean? 10 to 50ppm or 10 to 500ppm? TCP is used generically to mean a phosphate ester that meets the Lycoming LW-16702 spec. Butylated triphenylphosphate (bTPP) is unstable in the presence of water and heat. An engine burning 15 gallons of fuel per hour will...

First of all, NC19143 is incorrect as the AeroShell 15W-50 meets the Lycoming Service Bulletin 446D per FAA AD 80-04-03 R2 and does not need the addition of LW 16702 triaryl phosphate additive. The W100 Plus has the same additive package, minus the viscosity modifier, and also meets the same...