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Old 04-18-2010, 01:27 AM   #34 (permalink)
Shawn D.
Harebrained Idea Skeptic
 
Join Date: Jun 2008
Location: Alpharetta, GA
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The White Car - '84 Mercedes-Benz 300td
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Quote:
Originally Posted by ShadeTreeMech View Post
there seems to be a misunderstanding about something concerning oil filters.

After the oil is sucked from the sump, it's next stop is the oil filter. Then the oil goes to the pump; IE the filter is within the suction part of the system. If you've ever had to stab a filter with a screwdriver to remove it you'll know the metal is rather thin. Would hate to subject it to 80 psi.

The oil filter rep talking about the 20 psi differential hinted at it if you look carefully at what he was saying.
That is incorrect. As comptiger5000 says, every engine I know of has the arrangement of pickup -> pump -> filter. I would be very surprised if you came up with any example of the arrangement you're suggesting.

As for the filter metal being thin, a can shape is far more likely to crush under vacuum than it is to burst under pressure. Under vacuum, the material is under compression and tends to buckle, whereas under pressure, the material is in tension and resists deformation.

Dunno what you're hinting about when you're talking about someone else hinting about something!
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Last edited by Shawn D.; 04-18-2010 at 01:38 AM..
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