09-24-2026, 04:13 PM
If the return loop is left open, the heater core will be exposed to the system pressure, somewhere between 12 and 16 psi depending upon the radiator cap.
Richard and Rhonda Entrekin
95 Newell, 390 Ex caretaker
99 Newell, 512 Ex caretaker
07 Prevost Marathon, 1025
Maverick Hybrid Toad
Inverness, FL (when we're home
)

