Briggs & Stratton oil filters are more expensive than auto filters. My question is it somehow injurious to the engine if I would use an auto filter that is the same diameter and screws on with the approximate length as the number B&S 492932 filter that is recommended? I suspect that their admonishment to, "...use only OEM Briggs & Stratton parts...", is but a marketing ploy. Please no platatudes about penny wise, dollar foolish, etc. If you are going to advise not to do it, give the specific failure mode to which it will contribute. As I see it, a filter is pretty much a filter relative to how many microns of the mesh size.