OK, I saw the coolant light on the dashboard and put about 3/4 of a gallon of coolant into the reservoir. Later after a hot run I stopped the car in the garage and heard a bubbling sound coming from under the battery area.

It appears I have air in the system so I will elevate the front of the car and remove the reservoir car to run the car for a bit. My questions are...

1. How long should I do this?
2. Should I also loosen the bleeder screw next to the dipstick?
3, Should I also turn on the heater?
4. What are my chances that my head gasket is fried?

Many thanks in advance.

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1987 300E
1967 Jaguar E-type Series I, 2+2