phosphate-free
a 912 Porsche engine will fit in a beetle
The factory coolant is a red, five year, HOAT type coolant.
It depends what type of Corvette vs. what type of Porsche. Certain Corvettes are faster than certain Porsches and vice versa.
The 2009 Porsche 911 has double overhead cam (DOHC).
The 2005 Porsche Cayenne has double overhead cam (DOHC).
The 2003 Porsche Cayenne has double overhead cam (DOHC).
The 2005 Porsche Boxster has double overhead cam (DOHC).
The 2007 Porsche Cayman has double overhead cam (DOHC).
The 2013 Porsche Panamera has double overhead cam (DOHC).
The 2010 Porsche Cayman has double overhead cam (DOHC).
The 2010 Porsche Cayenne has double overhead cam (DOHC).
The 2014 Porsche 911 has double overhead cam (DOHC).