I use liquid wrench brand dry moly type spray lube from wally world on the basement storage door latches.
i have used this stuff to good effect on the hwh jack cylinders, winegard batwing antenna mechanism, the fantastic fan dome lifting mechanism, the main entrance door latch, and the electric step mechanism.
it sprays on wet but dries quickly. be careful not to get it in your eyes or breathe the vapor.
we got 2.5" of snow tuesday in the portland/vancouver area.
it all melted thursday in the rain.