Hi everybody,

Need help.. my car is overheating it's a wira 1.5 carburated engine. Did an overhaul (Full) after white smoke started coming out. Just did it about a week ago. My mechanic says it's the motor oil type I should change from 10sae to a 20 sae or something like that. Everything is fine for about 20 to 30 mins but after that the temperature rises gradually to almost the red line. I've tried flushing the radiator, changing the termostat, changing the hoses, changing the fan but...