Those Cardone pumps are a joke. I read the reviews and realized it was worth the risk. DO NOT DO IT! My pump even started squeaking a day after installation. And yes, I used the recommended Mercon V and completely bled the system. The pump I replaced was also a Reman pump, but for some reason this Cardone pump is even worse. It can hardly spin standard tires at low speeds. Looks like they'll just repaint the cores and put them in boxes to ship back. "Rebuilt" my a$$.