Remember the overheating thing with the El Camino? We thought we had it conquered, but....

Since it was being sent on a transport truck to our new home, I drove it till it was nearly out of gas before filling the tank just enough for the transport - 1/4 to 1/2 tank.

Before I refilled the tank, I experienced the same overheating issue as I was having before. Every time I drove it, it got hot.

My question is: could it be that the gas tank needs a thorough cleansing? Could there be some sludge or silt in the bottom of the tank that would cause the stat to stick or the sensor to think that the car is hot?

Just curious. Thoughts, please?