Bluecol BRS500 Radiator Sealer 500mlBluecol Radiator sealer repairs leaking radiators quickly. It makes a tough long lasting repair.ADVANTAGES Contains rust inhibitor Does not affect anti-freeze  Treats up to 10 litresDIRECTIONS FOR USE Run engine until warm.  Shake bottle well and pour into radiator.  Run engine again for a fe... Read more...