Otherwise Cayman made in 2012 won’t serve you long enough. There are some conditions in servicing cooling module at Porsche Cayman. It’s important to provide cooling for Porsche’s engine with 2.9 liters volume. To maintain cooling system you need 22 liters of Blue coolant. Before choosing fluid note that engine code M97.22 and volume of 3.4 were installed to your car in 2009.
Better buy 22.3 liters of good antifreeze in Red color. Use your 3.4 engine longer in 2012 Cayman by keeping these rules. A lot of M97.21 motors are used long in Porsche cars but only with good service. There is a big plus in servicing 2007 Porsche Cayman with all regulations.