So, being a bit of a muppet last year when I change the oil and filter I left my stock of filters** in the garage over winter. Its unheated, doesn't leak single skin brick, not too much condensation, but I don't leave the toolbox in there. I was wondering if the general moisture levels would have had any adverse effect on the filters. While I'd rather not bin them it's a cheap alternative to lunching an engine

** oem in the cardboard box, no plastic bag.
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Rod