We all use our Oliver's differently, in different environments, with differing expectations, and we all measure standards to those expectations. Four seasons does include "winter" and in this huge continent we can be in south Florida or North Slope Alaska and still be winter- with vastly opposite conditions. I would not expect any Oliver to adequately handle Ice fishing conditions unless modified to do so, nor a Montana winter on a daily basis. So, definitions matter, and four seasons means to me, in stock form, the Oliver (2027 models) will handle a few very cold days below zero, off grid. Late fall, at elevation, its 20 degrees at night - warms to low 50's in day - we get out hike, fish, whatever, and at night we are warm and secure. Snow, rain, ice, in moderation, not an issue. After a few days, we head out to the next spot, similar low temps and warming days. My expectations are met. If you need more - then a specialty product is needed. Yeah but 4 seasons? Ok, got it. I have enough experience in really cold weather - RV, tent, backpacking, - or otherwise to know matching equipment to the conditions is key. My two cents - Oliver within reason is more 4 season capable than most, but it is not a Montana winter home, nor an ice fishing platform in Wisconsin. Perhaps it is a 3.5 season RV?
RB