PurOne filter/drainback valve
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Junior Member
Joined: Jan 2001
Posts: 7
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From: Boston, MA, US
PurOne filter/drainback valve
Just changed my oil to Mobile 1 synthetic, with PurOne filter. Wondering if this filter has the anti-drainback valve like the Motorcraft filters? Also, I see a lot of people saying they use Mobile 1, does this always mean synthetic, or does Mobile 1 make non-synthetic also? Thanks