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I dont see any scientific reason why cold oil shouldnt work. If the oil freezes on the filter imagine whats happening to your engine oil before startup !!!!!

Have you ever tried to pour (conventional) motor oil from a can at -20? It is more like molasses than oil...and its higher viscosity does affect your engine at startup (hence one of the prime benefits of synthetic oil). How this might affect the "stickyness" of the filter oil is anybodys guess - who knows, it might even be more sticky when cold. But my work with inertial impactors in environmental sampling suggests that very cold temps might cause some of the particulate to bounce off rather than stick.

Steve Carlson - 95 Trooper LS expo rig
Serenity now!