Was: question about oil filter change,now: different question about oil filter change

[jdbubb at verizon.net (Dan Bubb)]

----- Original Message ----- 
From: "David Utley" <fahrvegnugen@cox.net>
Sent: Sunday, July 10, 2005 9:43 PM
Subject: RE: Was: question about oil filter change,now: different question 
about oil filter change


> Another thought; the valve they were refering to was the valve that keeps
> pressure at hand inside the filter itself.  This valve keeps pressure up 
> so
> that when you start your engine, you have instant oil pressure from it.
>
> Upshutting,
>  David
>

This is simply not a true statement.
The valve holds pressure against what?
Pressure will leak through the bearings and pressure will leak back through 
the pump.
The filter would need to have two valves to retain pressure.
And having a check valve to hold enough pressure to make a difference would 
impede flow to the engine in situations where the pressure is low, such as 
at idle.

If what you say is true you'd need to be careful cutting one of these 
filters apart to not get an eyeful of oil from all the pressure contained 
inside.
There'd need to be a Stella Award sticker on the outside of the filter.

Dan