[Lord of Hog]

They came out of the factory with the pink OAT coolant. Now there's an ongoing debate as to the damage that this may or may not do to O-rings, particularly those on the thermostat housing. However the blue and pink varieties won't mix so if you're going to change from one to the other you'll need to do a full flush and then refill the system by the book in order to avoid those air locks.