My dad has a 40-year-old puke yellow Kenmoore refrigerator and 35-year-old Maytag washer & dryer. There's 2 axises of goods to think about that differ wildly:

My dad has a 40-year-old puke yellow Kenmoore refrigerator and 35-year-old Maytag washer & dryer. There's 2 axises of goods to think about that differ wildly: 1. the specific brand and model - some models may have regressions or design defects 2. the model year, manufacturing date and location - quality, reliability and cost-cutting measures vary with revision, manufacturing experience and who put it together (QA/QC doesn't catch every possible contingency)