Some "conventional" antifreezes on the market don't advertise that they are for use with aluminum. In fact, some say not to use with aluminum radiators. What is the proper type of coolant to use with the aluminum radiators (or even cylinder heads)?
Most common brands and color coolants have been made compatible with aluminum heads and radiators as well as aluminum blocks and heater cores. The orange stuff was originally developed in the 80's, but it's since been proven that orange or green can be used with proper maintenance.