As I understand it, the only benefit of an air/oil separator is to keep the
belly of the plane clean. In reality, what it does is concentrate all the nasty
water and acids the plane normally produces as combustion byproducts and send it back
into the engine. I wouldn't install one on my plane for this reason... even though
it's got a dirty belly.

-Cory

wrote:
: I am considering installing an air-oil separator in my 172H (Cont
: O-300d). I have spoken with Airwolf who say theirs will work well and
: is ALMOST STC'd but they "will provide the required paperwork to make
: it legal until the STC comes thru" (whatever that means).
: I also spoke with Aircraft Spruce who say the M-20 is the one for my
: plane and it is already approved.
: Airwolf is $495 M-20 is $360

: Any suggestions/PIREPS/considerations/anecdotes appreciated.


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* Cory Papenfuss *
* Electrical Engineering candidate Ph.D. graduate student *
* Virginia Polytechnic Institute and State University *
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