Sorry for the double post. Mods may delete this duplicate post!

Hi,

While driving today, my oil pressure light went on. I was due for an oil change, so figured that's what i need and changed the oil, topped off coolant (The engine was very hot and had to wait for sometime) After driving for a bit, i noticed that the engine has heated up beyond the H mark. (Had never noticed it before) As I was trying to park, the check engine light went on. I parked and waited for a bit before taking it to the nearest auto repair center (<0.5 miles away).

The diagnosis was that one of the heater/radiator hoses was leaking and I need to replace the hose, thermostat. I was told that the oil pressure light might have come on due to the thinning of the oil when the engine heated up. So my question is, how easy is it to do the recommended repairs? I can't pay $300 to get it done. I have replaced a heater hose before

I know that there is a chance the head gasket, and worse the engine, is damaged. Is there any way to find out the extent of damage? Keeping my fingers crossed!

Thanks