For years we have been asked what coolant we recommend. After having issues with all of them and finding ourselves no longer able to answer this question we decided it was time to create our own. Diffusion comes in two options, clear coolant concentrate or a coolant concentrate and dye kit with which you can make any color. A vital aspect of our builds has always been the coolant colours. Existing coolant colours are often not the correct colour or not vibrant enough. So, we have always created our own unique colours to fit the themes and colour schemes of our builds. It is an important detail which can make your build more unique. With the included dyes you can easily create any colour you can imagine.