At 07:31 AM 1/30/2003 -0600, you wrote:
>Most of the 3.9/5.2/5.9L engines idle at about 15-20psi (oil pressure)
>and run at 60-70psi at 3000+rpm. The bypass valve is there in case the
>filter gets plugged...then it will open and bypass (no filtration).
>
>On using the Mopar filters (as Gary mentioned)...the Anti-Drainback
>Valve is much better. Mopar uses a heavier duty valve (anti-drainback)
>to prevent the annoying lifter-clack in the mornings (applies to
>3.0/3.3/3.9L and can apply to the 5.2/5.9L as well). FYI: Mopar filters
>are built by WIX.
Are they? According to this site: http://www.minimopar.net/oilfilters.html
it's sort of a hit and miss with Mopar filters. Sometimes you get a Wix,
sometimes a Fram, sometimes a Champion, etc.... Seems like it'd be easier
to just buy the Wix so you know you're not getting any Fram garbage.
-Bill
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