how to fix a coolant leak

{"cid":"91223947","title":"Portable Leaking Radiator Quick Fix For Car Cooling System 350ml","imgUrl":"https:\/\/img.ismap.com\/nimg\/2a\/35\/52764069e48da40046307a77f949-200x200-1.jpg","attrs":{"Price":"USD 0.700-1.500 per piece","Brand Name":"OEM","Model Number":"UM-10002CS","Minimum Order Quantity":"3000 Pieces","Delivery Time":"30 Days","Certification":"MSDS \/ FORM E \/ CO","Place of Origin":"China","Payment Terms":"D\/A,D\/P,T\/T,Western Union,L\/C","Supply Ability":"100,000 Pieces Monthly","Packaging Details":"24 PCS\/CTN","Name":"Radiator Stop Leak","Net Content":"350ml or customize","Customizable Service":"Available","Customized Sections":"Packaging Size\/Appearance Printing\/Packaging Material\/Color etc.","Packing Details":"Packed with Carton. 24 PCS\/CTN","Application":"Cooling System Radiator Stop Leaking","Free Sample":"Negotiate","Shelf Life":"3 Years"}}

{"cid":"91220625","title":"ZPY Engine Seal Repair Kit 04E198012 for VW Audi Porsche","imgUrl":"https:\/\/img.ismap.com\/nimg\/69\/27\/5198a2e784fc1d5f7b7e5ad16bf1-200x200-1.jpg","attrs":{"Price":"42.98~53.98USD","Brand Name":"ZPY","Model Number":"04E 198 012","Minimum Order Quantity":"1 Piece","Delivery Time":"3day","Place of Origin":"GUANGZHOU","Payment Terms":"L\/C, T\/T, Western Union","Supply Ability":"200","Packaging Details":"Color box; Polyethylene bag; Carton.","OE NO.":"04E 198 012","Car Fitment":"VW,Audi","Type":"Engine Seal Repair Kit","Car Make":"for Audi VW Porsche","Product Name":"Auto parts","Car maker":"Automotive Spare Parts","Application":"Germany Cars","Payment Methods":"for Audi VW Porsche"}}