Conklin Stop Leak
Conklin Stop Leak prevents DNF in the event of radiator puncture, cracked cylinder head, or head gasket problem. Most stop leak products use ceramic and rely on air to plug the hole or crack, coagulation, therefore leaving residue. Conklin Stop Leak’s non-ceramic formula stays suspended in water and will not plug radiator tubes during the draining process and leaves no residue.
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Conklin Dike Stop Leak
Length of ownership: more than 1 year
Pros: Works great and doesn't stop up heater core,used it for years to seal water leaks in blocks,head gaskets and ect.
Cons: no cons