My coolant level does not go down, but when I move the temperature
lever from cold to hot, I get a just a very brief whiff of coolant
smell. I've owned the car for about 2 months and had added a container
of Barsleak pelletized to the cooling system shortly after I bought it
(160K miles on it, just in case a radiator failure was around the
corner). Is there a trick to changing the core? Thanks.