transmission issue

I know there are threads on this, I've read most I think. I also checked out Flood and Granger, the '19's are 'too old' at this point it seems regardless of mileage. Granger doesn't go older than '21 per the website and Flood I believe was 41 months or something like that. Hope I'm wrong, anyone...

So my 2020 Ranger was coming up to 32,000km ( About 20,000 miles) and I decided to follow the Canadian service manual which said to change the transmission fluid. I took it to my near by Ford Dealer on a Thursday. Got the truck back on Friday. It sat in the driveway until Sunday. That Sunday I...