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hi all!

my water level in the reservoir is decreasing annoyingly. checked all- radiator, hoses, cap, water pump, thermostat, all seems to be ok. no water leaking. air air-cond ade la...slalu kuar. ade kena -mengena ke? water jacket bole bocor ke? radiator dah servis, siap tukar head skali tapi sama gak. temperature normal, tak penah naik paras bahaya atau overheat. no loss of power or eniting. keta turbo makan air banyak ke? aku taknak le kena overhaul. so kenkawan tolon le rekemen workshop...