Kestas
Staff member
Which antifreeze should I use for my 71 Cutlass that has a copper radiator and heater core? Some time ago I read that for systems that have copper, brass, and solder, silicated antifreeze (like the old green stuff) works best in protecting these metals. Can anyone verify this?
For all my other cars I use G-05 antifreeze.
For all my other cars I use G-05 antifreeze.