Antigels, also known as cold flow improvers, are used to prevent fuel gelling and lower the Cold-Filter Plugging Point (CFPP) of diesel fuel. 

A fuel additive known as an “antigel” is one that is used to prevent fuel gelling. Fuel gelling occurs as the fuel reaches the Cold-Filter Plugging Point (CFPP) and fuel can no longer flow through the engine. A fuel additive that is an antigel is used as a preventive measure, to keep fuel from gelling. Once gelling has occurred, a different type of additive must be used to reliquefy the gelled fuel. Power Service Diesel 9·1·1® is the product you can call on with this fuel emergency.