Yes. In all but very severe cases CouplerTec systems will slow the corrosion rate noticeably. It is recommended that CouplerTec be installed prior to having your vehicles rust repaired, this will allow time for the CouplerTec technology to stabilise any existing corrosion.
                                
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Another year gone and our 35 year old Landcruiser HJ60 is still shiny and No rust! at Abenteuer & Allrad show in Bad Kissingen, the biggest offroad exhibition in Europe.