Snake oil? Parker lubrite graphite magnesium phosphate matrix

[SilentT]

So by now you probably all know I bought an 85j that sat for more than 15 years before being flown 8 hours to sit another 15 months before being flown 10 hours a week ago to my latest location and back i asked for some more details and pictures and this is what I got asked for some more details and pictures and this t what the engine overhaul mechanic said he did to the internals of this engine. Something about I don't have to worry about the corrosion because it got a graphite Magnesium phosphate matrix. I asked for some more details and pictures. 

https://www.parkerhq.com/parco-lubrite-phosphate-conversion

The latest mechanic did take the plugs out in borescope the cylinders and said it looks great but we didn't take a jug off. 

I also included some sexy engine shots that I took this morning 

 

[EricJ]

Wrapping exhausts is an old race car trick, but the downside is that it greatly reduces the longevity of the pipes.    I would inspect those frequently, which means removing the wraps to look for accelerated corrosion.

Your airplane looks clean.   I don't know whether Parkerizing is approved for any aircraft engines for certificated airplanes or not.    I think this is the first time I've seen it mentioned in this context.

[blaine beaven]

Is there any performance benefit to a wrapped exhaust? I’ve never encountered that on an airplane before. 

[EricJ]

9 hours ago, blaine beaven said:

Is there any performance benefit to a wrapped exhaust? I’ve never encountered that on an airplane before. 

On race cars it keeps more heat (and therefore energy) in the exhaust gas so that it exits faster.   It can also help manage radiative heat a bit.   

They can become fire hazards if they get oil/residue/fuel/whatever in them.