I was looking for a small pancake compressor to replace an ancient tiny Sears unit that had no reservoir tank. I notice that they now come with an expiration date to remove from service. It looks like they are only good for about 11 years. Really? By that standard my old 1990's Sears 30 gallon unit is a ticking time bomb. What about the big compressors like 80 gallon units? I looked at an 80 gallon Campbell Hausfeld and in the manual there was no such mandate. Is this only on the very small models? My Sears Craftsman was made by Campbell Hausfeld so I never worried about it. I have seen lots of YouTube videos of failed tanks that blew up. Autopsies showed tons of rust inside, even when drained religiously. I also have seen some good ways to hydro-statically test them. You fill them with water, then pressurize with a power washer. If it fails, the water does not blow up like compressed air does. I have always drained my tank, stored it in a dry place, yet I worry it may be dangerous at this point. What do you guys know about this?