Is this dented filter usable? PurolatorBOSS PBL20195

This is the correct take. Our engineers at Fleetguard say the same thing. Dents will often create weak points and the filters can start leaking.
I wouldn't use it and risk an engine over a free dented oil filter. Those dents look to have sharp edges which can translate into stress points that could weaken the metal and spring a leak from the pressure fluctuations.
 
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