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Date: Wed, 14 Feb 2007 17:26:47 -0500
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From: "Skip Slater" <skipslater@earthlink.net>
References: <list-1838036@logan.com>
Subject: Re: [LML] Air-oil separator
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Angier,
   I've had two different air-oil separators on my engine, an M-20 and a 
Walker, which is now marketed by Airwolf.  The M20 was a total waste of 
money.  The separated oil seemed to either stay in the separator or run out 
of the vent hose onto the belly while the engine was running, then 
invariably drained whatever was left over out after shut down onto my hangar 
floor.  I checked to make sure it was clean and had no blockage internally 
or in the lines and it just never worked worth a darn.
   I took it out, cleaned it up, sold it on eBay and used the money toward 
the more expensive Airwolf.  It's worked as advertised and has never dripped 
a drop.  My belly stays clean.  One caution about Airwolf though - it's 
advertised to come complete with everything you need from hoses to clamps 
and all hardware.  I gave them my engine model number and they sent me the 
hardware for a Saratoga installation, which didn't work in my ES.  I had to 
return some parts and then wait seven months for a new siphon tube for the 
oil return line.  It had to be fabricated to my specs because they didn't 
have one for an angle valve IO-540.  When I finally got it, I was charged 
over $100 for parts and shipping.  So much for a "complete" kit.  If you buy 
one, get Johnny at Airwolf to guarantee you that you won't be charged for 
any extra parts.  I felt I got burned by him on this.
   One thing I was told was that if your engine doesn't have oil on the 
belly, you don't need a separator.  I'd resisted buying the Walker for my 
plane due to it's large size and cost, but they now make a smaller diameter 
model that will fit much more easily.  (I only wish Johnny had told me it 
was coming out - I'd have waited for it).  Bottom line though is that the 
Airwolf is the best separator out there that I know of.  They're not cheap 
(around $600) but like anything else, you get what you pay for.
   Skip Slater
   N540ES