Friend had one of those sealed Ford transmissions. What a piece of junk! Rebuilt 3 times by 3 different shops and it still didn't work right. He finally sold that POS Explorer to get rid of that problem. Kid who bought it dropped the engine and tras and stuffed in an older big block, lifted it 6 inches, new axles... strictly off road mud racer now. Had a good rust free body, something you don't see in MN!Yeah, I don't blame you. I've never been a fan of "forever" fluid in a vehicle. The same fluids that people with our experience are used to seeing burnt, broken down, contaminated, or other bad things due to time and heat.
Could you imagine if Mazda, Ford, BMW, or whatever motor corp truly managed to invent a "forever" fluid?
It started with sealed transmissions because they wanted to try and force service back in to the dealerships. Now it's proprietary forever fluid from the dealer or forfeit your seriously limited warranty.