No unit is designed for anything other then to statistically make it past the warranty period within the defined warranty budget whatever that may be. Maybe an accountant from the auto mfg'ers can explain how they figure the accrual out for each vehicle. Trust me, it isn't what the engineers would like and it is not in the best interest of a consumer who plans on keeping a vehicle a long time.
Nothing is designed to last forever.
But, you can exceed the ANY design requirments with the variables that YOU DO control: preventive maintenance, improved filtration, better cooling, quality fluids, common sense driving style... And, since this is BiTOG, and not a auto-manufacturer controlled website, I'll concentrate on pushing "PM" and upgrades as much as possible, which are proven to work. No maintenance, or lack of, is proven NOT to work. Common sense doesn't need engineering backing it up. Credible evidence pulls into the warranty bays and independent shops regularly.
Critic, you don't waste your time with UOAs? but you do post there don't you? Why don't you waste your time and volunteer at an Aamco or other transmission shop? Maybe your opinion on the superiority of OE engineering will change, as it needs to since some of your posts show thoughtless thinking.
A UOA along with filter/magnet inspection shows plenty, without professional interpretation, and is a pretty big picture!
Also, NOONE knows what those components are truly designed for. With the number of early failures, and common or frequent failures, makes you wonder what the h3ll is going on. And some automakers wonder why they aren't making money, or are not selling tons of cars, or wonder why depreciation is pathetic with certain models?
