Re: installing a heater core in 66 mustang
> Word of caution, be sure to drain your coolant below the level of the heater
> hose outlet and inlet before you start, or you will end up with coolant all
> over the place! Even so, remember that there will still be coolant in the
> core and hoses, so be prepared.
Absolutely. A good trick is to use compressed air to blow all the
coolant out of the core before you start taking things apart. You never
get 100% out, but it greatly reduces the mess. You just cut the heater
hoses (since, as someone else pointed out, you'll be replacing them
anyway). Stick one of the hose stubs in a bucket and use your
compressed air blower tool to shoot air into the other stub. After
about 20 seconds, it should be more or less empty.