Yellowcommando

Whoops..went off on a bit of a tangent there..I didn't read the diesel bit properly....must be the heat..rad or bad guage..if it isn't splurting water out..I use agua fuerte..floor cleaning acid, you can get it in carrefour..then put a hose up it the wrong way..preferably out of the landy!

Oh..and they are about 3 Euros..bonus

I use these. Gets pretty hot where I am so cooling is always an issue. There is two types, thermo contact and thermo resistor..you want this type, contact, resistor is for guages. They simply bolt onto the head/block and are rated about 82/85..thermostat temp. The part number is on the box. You can be really smart and use a lazer temp gauge to find the hottest spot..but I just bolt em on the head somewhere so they touch the jacket...

Head skims and modern fuels change the flame front (passage of fuel in gasses out) on petrol motors..additives purely cushion the valves.unleaded conversion is a grey area...put jetting backnto standard specs and start your timing at 6..strobe it..suck it and see..if it was water related you soon know it would escape somewhere...or drive at 40