Sifu help me pls!

[rollakid]

mine last time leak at where ah tiam weld, only leak when at high preasure. he use gasket glue to fix it.. alot better.. but still got abit.. then the dried coolant seal it up now no more leaking at that part. but the radiator's bottom part is leaking, last time everyday need add a cup of water, but until one day my aircond's pipe blow, the aircond lubrication oil somehow seal the radiator now no more leaking lolx.. funny.