My 2003 VY Wagon had cooling problems over an 18mth period up until 6mths ago approx. It now has done around 245,000kms. . I had most things done over an 18 mth period except having the radiator replaced. The overheating problem would persist some times months in between it happening again. The radiator was replaced approx 6mths ago, so far so good. New radiators cost a few hundred, a very worth while investment.