or a stuck thermostat .
radiator cap
Most definitely. A blown head gasket can cause the temperature to rise and put back pressure into the radiator, therefore possibly causing the radiator hoses to blow, or even bursting the radiator.
This could be caused by a leak in the cooling system, a malfunctioning radiator cap, a blocked radiator, or a failing water pump. It's important to have the system diagnosed and repaired by a mechanic to prevent overheating and engine damage.
A radiator does not require a gasket so this may refer to a rubber mounting that prevents the radiator from jolts and damage.
blown head gasket
You pressure test the cooling system
looks like cilinder head gasket is defect, engine pressure is coming in radiator, and cooling fluid goes into motor
radiator fan, head gasket,
The pressure from the radiator is pushing out through the overflow canister. Probably solved with new radiator cap but could be an indication of head gasket problems if pressure gets too high.
Sounds more to me like a radiator problem.
Oil in the radiator is usually an indication of a leaky head gasket.
coolant overfilled? thermostat not opening allowing pressure to build-up? --------------- Please test the radiator cap with a pressure tester. Also, look for a cracked head or bad head gasket.