I just recently bought a 94 100s for my wife and have no idea what coolant has been used in the car. It has green coolant in it right now and it has no leaks, but just in case I need to add some will this new Prestone stuff work good? It says it can be mixed with any color coolant and works well on ALL makes and models. What are your thoughts?

cooling systems. Prestone coolant may or may not work, but why take a chance if you add it and then have to drain, flush, ad refill the entire coolant system?