Bill Freeman wrote:

Eric - I assume you are aware of the long running maintenance
issues with the H series O-320 Lycs -??

I think that those issues are long gone.  I, along with two other CFIs,
have seen two H2ADs go the whole 2000 hours without so much as
a single burp or missed training session.  The secret is to keep them
flying.  The problem with the oil running off the cam surfaces if the
engine was not run for a week or two was apparently fixed by an AD
that required an oil additive that is now standard in AeroShell 15-50
multigrade.

Bob Moore

 
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