My buddy with a Duramax had to replace all his injectors at 120,000 miles and got me worried - I have about 200,000 miles on my 2006 Dodge. How long do injectors typically last and how does it diff...
But at 200k you're probably on borrowed time if you only have OE filtration. As mentioned though, if you don't have symptoms of leaking or high return rates you're still in good shape.