Do NOT want to use any milky looking orderless mineral spirits. It will gum up brushes terribly. You want nothing but the blue/gold label can or plastic bottle with blue writing that says Clean Strip Oderless Mineral Spirits, and it is a clear liquid. The one with the green label is NOT the one to use. You could mix half and half with 91% alcohol and us it for years. Brushes all look like new even you brush everyday.
It is great for wipe outs using a dry brush too.