Could be the thermostat it's stock, replace it.
the simple answer is the coolant fluid - make sure it's full where it's marked, after driving it ten miles. the bigger problem is unlikely if it runs alright, so try the first. you might just need to flush and fill the coolant too..
SOunds like a radiator hose and that liquid is coolant and the stink is the coolant hitting the exhaust manifold
I would say yes, if oil has mixed with the coolant, that's the most probable cause.
Oil or trans fluid is getting in the coolant system. Have it checked out now. You can ruin lots of things by driving it.
You stop driving it and repair the problem that is causing it to run hot. A complete cooling system service is in order. Drain the coolant, replace the thermostat, replace the coolant, check the function of the water pump, the thermal switch for the cooling fans and the cooling fans themselves. Clean the exterior of the radiator and flush the radiator.
If coolant full could be a bad sensor
When the car reaches normal operating temperature, open the hood and see if the radiator fan is running or starts to run before the engine runs hot. If the fan doesn't come on, the problem is either a bad relay or fan motor. If the fan comes on but engine still runs hot, problem may be thermostat stuck in closed position, faulty water pump, low/no coolant, or clogged radiator.
Not sure how long ago you've been driving after this service was performed but my best guess would be that its what is left over from what was in there. If it doesnt stop or actually I recommend you go see the service center you had the service performed at and have them look into the problem again. They should be responsible for all costs if they have had a problem with the parts they replaced
Coolant will enter the combustion chamber. This will cause serious engine damage. Your Catalitic converter & O2 Sensors will also be ruined. STOP driving this vehicle until you have this repaired.
coolant temperature sensor are located where the coolant runs in the block near the thermostat housing normally the connector are on top of the sensor and the sensor itself screws in with a deep socket. The temperature sensor is usaully located where the coolant runs OUT of the engine close to thermostat housing.
Low engine coolant--when you step on the gas water pump runs faster and is calling for more coolant--check level
possible head gasket problem this engine was famous for it.