Of course it's Winter and of course my heater core is leaking anti-freeze on the cab floor(right on my wife's feet) so I need to get it fixed. Do I need to drain the whole system or just disconnect the one hose that has the on-off valve. I just put new anti-freeze this summer ..of course...what's the easiest way to get said heater out and keep from draining all the anti-freeze?
Thanks, Steve