Charm has moved all vehicle service manuals to a new site called Lemon.
Thanks to TooManyToys on FTE at the 6.0 powerstroke forum
I see the 4k tow pkg only needs only 1/2 quart more coolant than 2K on a 2025 2.0 ecoboost
https://lemon-manuals.org.ua/Ford/2025/Maverick Lariat, 2.0L Eng VIN A/