I have a 2000 Accord. When I start the car the Maint. Required light flashes for a while. I think I recall that means routine maintenance. The car has 51,000 miles. One of the service techs at Honda told me once that timing chains should automatically be changed at 50,000 before they go. Is this hype, or should I do that. Is this connected with the light? It's abouit a 00 job, so I don't want to do it if it's not highly recommended. thanks, mm