you can but the truth with the green sh!t is that it really isn't that great for aluminum parts. you can use other coolants like toyota's, ford's, and other brands. all the company's now run a 5 year coolant. it's basically dex-cool but different colors. toyota - pink, ford - yellow, honda - blue etc. the new dex-cool is fine just get all the old **** out and change your nylon LIM gaskets to aluminum.