Topic: Heater Core care
in Forum: C3 Cooling and Heating Systems

I'm putting my BB back together again, and since I'm only going to drive it in warmer weather, I don't intend to reconnect the heater hoses. I still plan to leave the heater hoses connected to the heater core. My question is anyone have any thoughts on the best way to prevent any corrosion while it's not connected.
Flush & drain the core totally, and leave dry?
Flush and refill with distilled H2O?
Flush and refill with antifreeze mix and plug hose ends?
TIA
BB NJ Ken
1972 T Top 454; "Boomer" Latest "upgrades": 1 1/8" front Stabilizer bar. Rebuilt SS calipers with O-ring pistons. Under car Chambered exhaust. Fiberglass rear spring (360lbs/in). Bilstein Rear Shocks. 3/4" Rear Stabilizer Bar. Tow hitch. Performer manifold with 600 cfm Holley. Comp Cam 262 .499 lift. L-88 Hood in process
I would use a mixture of antifreeze & water...fill from bottom hose & seal ends
Alan
Opinions?
I was a boater for many years & every year I flushed my engine with fresh water then mixed a 50/50 mixture of antifreeze & water and filled the system. Sometimes the engine ( Chrysler Marine 318 V8) sat for 6-8 months, but when I checked & started it everything was always fine. I never had the exhaust manifold corrosion problem that alot of my friends experienced. So I would have to say that air is the problem not the coolant.
Alan
Flush annually for best results.


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I put one in just like that the last time I flushed the cooling system. I used one of those Prestone back flushing kits, so as long as I cut the hose for that anyway - I put in the shut off valve when I was done.
It works and does make a difference.