cooling problems on a pinto

[peterpeter]

I was at Bassingbourn today. After a few very hard driven sessions, the temp started to creep up to over 105c , then despite backing off and trying to allow cool air in, it rose to 120 plus and lost somw water too.

The fan is working, but its possible the water was low and there wasnt enough coolant. ANyone use any particular cooling agents ?? anyone heard of "water wetter"??
Im not sure if the thermostat needs changing.
If I do are there any types you would recommend to keep the engine cooler.?