Raditor hose is getting hot at the thermostat, but the car just over-heated again on me, I drove it about 20 miles city driving, I was keeping and eye on the gauge and it showed normal (half way between cool and hot), then all of sudden the temp needle pegged. The lower hose was cool too,
Which way the water flow into the raditor is top to bottom, or bottom to top.

Thanks in advance for any advice.