krislex

Im loseing alot a day, car booked in this week.. When i find out what it is i will post on here, for reference if anything like this happens to your lexus.

I have a 51 plate lexus is200 on 124k.. Last week it overheated an i lost literally all my coolant. Didnt go into the red thou, but now every time i fill the coolant up it jus goes. I been told head gasket by a friend, but there is no water oil in the dipstick, no steam or any smoke coming out of the exhaust, heaters are blowing hot air. I have checked the thermostat and its working fine. Can anyone shed any light on this, as im new to lexus and there may be a common problem or something that im missing. Thanks in advance Chris