So I changed the dex cool over the holidays. Car is a '13 cruze with 37k on her. Problem is when I pulled the lower radiator hose I could only drain about 3 quarts out, yes I removed the reservoir cap. Manual says 5.7 quarts? if I recall correctly. Is there a different way to drain the coolant? In the spring time I plan on doing it again now that the coolant is mixed well with the old and new coolant.