it was a surprise for me when i went to remove the thermostat (pic 1).it was already not there.before removing its housing i checked with a mirror (pic 2).the car is with me for 5 years.i left it with Audi service center in Jeddah for two times. once for replacement of burnt distributor(i still have) after probably over speeding 252km/h.may be at that time they mechanic may have removed it to keep the car cooled down.i imported it from japan Yanase company in 2005.it boils water after 5km and i keep the cap loose so that steam may escape. can it be due to improper ratio of coolant:water?i think there is more water than coolant
