Now it's a part of what i add when i do a flush or drain and refill just as a part of maintenance. 

 

 A few things to keep in mind ,these cars run hotter by design then most people are used to seeing. If you're not sure of the service history on your car---then a flush or drain and fill is always a good idea.  Also be sure the the ac condenser and radiator fins are clean--these cars do collect debri from the road such as grass,leaves, plastic bags etc. Look close at the area between the condenser and radiator. Here's a interesting link about water-antifreeze and the above products

 

                                                                                              Vaughn