I it the way I learned years and years ago from a mechanic..... NO VAC, or other device …..just gravity and the pump & hold - close valve - release - repeatedly under it runs clear….. You do NEED another person or it will take 4 times as long..... for the Spyder I started with the left front, then right front , then rear …… good luck.... I'm positive there are numerous vids on U-tube on how this method is done ……..Mike