Really confusing trying to get it to work and almost nothing on the internet

Have a file that looks like this
data/createdieselgenerators/diesel_engine_fuel_types/milk.json

{
  "fluid": "#forge:milk",
  "sound_speed": 8,
  "normal": {
    "speed": 16.0,
    "strength": 1024.0,
    "burn_rate": 2
  },
  "modular": {
    "speed": 16.0,
    "strength": 1024.0,
    "burn_rate": 2
  },
  "huge": {
    "speed": 8.0,
    "strength": 1024.0,
    "burn_rate": 3
  }
}

The data folder is as a datapack or if you have kubejs, their data folder acts as a datapack too so
kubejs/data/createdieselgenerators/diesel_engine_fuel_types/milk.json

The documentation is here
https://github.com/george8188625/Create-Diesel-Generators/wiki/Customization#adding-custom-fuel-types

@george8188625 I added a link to the wiki in the readme if you want
#57

Thank you for your help kubejs was a big help

How do you tell what the #forge part for different mods

Mainly Create:The Factory Must Grow it has its own gasoline and diesel

#forge:gasoline is a fluid tag, mods should use these tags when they are making stuff like this, tags are like groups of fluids and mods should add their fluids to these tags, createdieselgenerators:gasoline is a specific fluid from a mod
For some reason last time I checked tfmg doesn't use these tags, that's why it's not compatible with many mods

@ChiefEhoy19 if you check the fluid id that they are using, you can put it there without the #

@ChiefEhoy19 if you check the fluid id that they are using, you can put it there without the #

All it was is was tfmg:diesel thanks for the help