The purpose of this script is to make fillable cars more realistic. There are primarily two components to it.
All fillTypes have actual mass with default FS25 (rather than half of real as in Farm Sim Versions prior to FS22). You can only fill trailers with the maximum weight permitted by the specific fillType if you play with the trailer fill limit enabled. Trailers will never weigh more than the maximum permitted weight if you play without the trailer fill restriction activated, but you may fill them up to 100% anyway. This implies that the extra mass that would add weight to the trailer is thrown away. In this manner, it makes it possible for players with artificially large capacity and casual players to stop worrying about having enough horsepower to tow a trailer. However, this is insufficient for realism gamers. Thus, this mod modifies that. You may load more than the maximum permitted weight when the trailer fill restriction is deactivated, and the mass will be added. Additionally, the percentage of overload will be shown under the fillLevel indicator if the trailer is chosen. Additionally, traveling with an overloaded trailer will result in extra damage. If you must overload your trailer, drive slowly unless you want to fix it often since the quicker you travel, the more damage you will do (speed^2).
This script's second characteristic is that it doesn't have a strict capacity restriction. Trailers can be filled over 100%, but the more fill that is "spilled," or lost, the more it can be filled. This is only because you don't have any strict boundaries in real life either. You don't need a second trailer if you have 150 liters remaining in your combine, and you don't have to unload first if you're only a few meters from the field's end. As soon as 100% capacity is achieved, you may lose up to 20% of each further filling since the real loss amount is rather unpredictable and may be up to 20% more than the mathematical loss. The loss is 0% at 100% capacity and 100% at 130% capacity. Each vehicle's additional input-binding allows you to turn this feature on or off (it must be mapped first; it is not mapped by default). It is turned on by default, however in order to play with Courseplay or AutoDrive, it must be turned off; otherwise, the assistant would load trailers up to 130%, which will result in significant loss.

Thanks to Modelleicher