<<  What's the take on putting the oil filter in the hot side of the loop
rather
 > than downstream from the cooler?  I seem to recall a posting here some

time

 > ago saying that the filter life is significantly reduced.  Do I recall
 > correctly?
 >
 > Al

The filter goes right after the pump. This keeps debris out of the coolers.
Once a cooler is fouled, it cannot be cleaned no matter what anyone tells
you. I have two filters before the pressure side cooler and two after the
scavenge side coolers because they had been corrupted in earlier
applications. The filters down stream from the scavenge coolers always show
some metal years after the coolers were cleaned and put back into service.
Lynn E. Hanover

If the cooler is expensive enough (and may aircraft coolers are) it can
be affordable to have them cleaned internally.  There is an outfit
that does this, very specialized work, special chemicals and a bit of time
(chemicals are pumped thru, etc).  A certificed shop, well respected
but much more expensive than replacing any automotive oil coolers.

Bill Freeman
Long EZ builder & pilot
BSME, MSME
EAA Technical Counselor

 
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