I know these are rather novice questions but here I go--

All the coolant that flows out during a water pump replacement effectively drains coolant from the engine block, correct? So when mechanics say the coolant is replaced as well during a timing belt + water pump job, does this mean they also drain the radiator so you now have nearly 100% new coolant in the system? I've always wondered about this grin.

Edited by mclasser (01/13/14 10:09 PM)
-- 2013 Honda Pilot EX-L 4WD
-- 2002 Honda Accord EX-L SULEV: 180K miles
-- 2002 Infiniti I35: 90K miles