What would be the best oil filter, for snowy, sandy roads, winter months? In terms of oil flow and micron filtering? Ive used Purolator Pureone, Fram extend guard. I seem to like the extend guard, as it is rated at 10 - 20 microns, and shows #@$%! good oil flow on paper!! How about other fitlers out hteri, to help catch sand, dirt ect that floats around in the air?
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