Subject: Long - oil filter anti-drain valve - the die is cast

[C1J1Miller@aol.com]

wrote:
---------- (big snip)
Mr. Payne, you are always the gentleman and diplomat, but again I

counter with Mr. Newton's gravity missive and the filter manufacturers'

statements about the ADV.  Then pose the question:

Regardless of the height of the filter mount, relative to any engine

part; and in a position where the filter outlet it facing the sky

(metaphorically speaking) as it is on my NF engine and I'm guessing most

I5s/V6/V8/L4 engines; how is oil going to be sucked out of it when the

valve only goes in one direction - that is to prevent oil from coming

out of the filter if it is inverted?
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Actually, its _pushed_ out of the filter by all the oil above it.  Think of a
garden hose full of water:  raise one end higher (i.e., the engine head and
valve lifters), holding the other lower (the oil filter outlet).  Water will
drain down from the higher end to the level of the lower end because of
gravity, thus draining the oil in the system that is above the oil filter.
Unless there's a valve to stop it.
HTH, Chris Miller, Windham NH, c1j1miller@aol.com
'91 200q 20V ==> http://members.aol.com/c1j1miller/index.html