Purolator & Wix will not warranty standpipe oil filters for /6 but Baldwin will.
Fair points on all sides in this discussion. I'm not about to criticise anyone's decision on whether to worry about filter warranties—they might or might not be the same decisions I'd make; everyone has to decide for themself what they're comfortable doing, and there's no right or wrong answer here. It shows just how rational and consistent we humans aren't that we're perfectly happy to drive an old car, severely unsafe by today's standards…but too risk-averse to use a heavy-duty filter because the maker won't warrant it in an off-label application.
We also see rabbits in clouds, a face in the moon, Jesus in our grilled-cheese sandwiches from time to time, and luck in our favourite numbers. None of it's really there, but…MonkeyOS 1.1b3 is a very quirky operating system!
Back to oil filters: I happily included Baldwin filters on my yes-list for years. The happiness faded when they started arriving labelled "MADE IN CHINA". I shrugged and sighed and picked another brand. That was enough years ago that any number of changes could've happened since then; I have no idea where Baldwin filters are made now.