What I do is put regular tap water with a little Dawn in the tank and bring it to a boil and drop in the barrel or whatever is getting blued and this will degrease all the nooks and crannys inside and out and the tank so no oil will appear later in the process. Rinse the parts and the tank with tap water and you should be set to go.

Last edited by dblfever; 01/28/09 08:38 PM.