In a message dated 1/22/01 3:20:40 PM Eastern Standard Time,
elinnhoff@smmc.saint-lukes.org writes:
> Okay, here's a question for all y'all. Why wouldn't you/we/I want our
> street car's oil filter to have no bypass and run "full flow" all the time?
> Especially if you're that meticulous (as I am and suspect the rest of you to
> be as well) about your car maintainance schedule? I suspect, but am not
> positive, the reason for the bypass to be when the filter gets totally
> clogged with crud that oil will still flow through the system. Right?
>
> Educate me a bit on the bypass sytem of an oil filter. Please.
>
Someone correct me if I'm wrong, but I thought that one of the reasons
for a bypass valve was to maintain oil flow when starting a car in cold
temperatures, when the oil would be thicker and more difficult to force
through the filtering material. Some engines might see 70-80psi or more
at startup in cold weather.
Could a bypass valve also serve as an anti-drainback valve, or would
that likely be a separate feature?
GH
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