I had a had to replace my engine because it overheated. The mechanic just changed the engine and said overheating was the cause without saying whether there was any leaks etc.
Since yesterday I noticed the in car heater wasn't heating up. I checked the coolant reservoir and it was showing as below the minimum. I drove it and it was sluggish the whole day. i wasn't observing the temperature gauge to know if it overheated or not.
Took to mechanic they identified leak from radiator and said the thermostat also needed replacing and so am just about to get the work done.
My question is, how do I know that as a result of driving whilst the engine had aforementioned symptoms and was sluggish, how do I know it hasn't been damaged i.e. there isnt already engine damage or a burnt head gasket. Could the sluggish movement be a symptom of engine damage?
I asked the mechanic this and he said the 'engine sounds ok just change the radiator and thermostat and you should be ok'. Is this sound advice or can I expect to be paying for more repairs after this work is done. I've been here before and it cost my through the nose. Should/can they look for engine damage before engaging in the current repairs as I've already spent too much from previous jobs and if there's engine damage, might be better for me to dispose of it.