What is the freon capacity of a 1998 Volvo truck?

Freon itself was largely phased out before 1998, but it would also be dependent on the model of the truck, as Volvo manufactures several different types, for a number of world markets. For example, they have the NH, NM, FH, FM, etc. series trucks, the VNL series trucks for the US market, etc. You'd be a bit more specific about what model Volvo truck it is.