Are these hard to replace on my 92 s10? I bought the new part, the old hoses are lookin pretty bad and I almost ran my oil dry as a result, so I figured I would replace them. They appear to be straightforward, but, would like to know if there is going to be any problems in doing this. The same day, I will also be doing an oil change and replacing my thermostat, previous owner appears to have not known what he was doing and I have a coolant leak around the thermostat, and barely any heat coming through, figured I would try the thermostat change first, since all coolant hoses feel to be about the same temp after the engine has been running a while....