Draining coolant from heater core
Whatís the best, least messy way to do this? Itís all still in the car, but I pulled the dash and center console. I need to remove the heater valve just to get to the 2 nuts on the d/s, but am leery of doing so b/c of all the coolant draining out. If I have the valve in the Ďoffí position, no coolant should drain from the intake side, but thereís still coolant in the core, plus, i assume, coolant could also come in from the discharge side?
Seems like the most sure way would be to drain all coolant and go from there? Looking forward to the collective wisdom. Thanks.
1974 GTV 2000 (ex-1992 Spider Veloce)