How many miles on a fleetguard filter?

[BarlowCummins]

I have just recently started doing my own oil changes on my 600 and i'm using fleetguard filters (stratapore). How many miles can you put on the filter before changing it, i have switched to royal purple so i can extend the oil change intervals, any help would be great, thanks corey

 

[ttreibel]

7500 miles here, but I have an 03 the oil still looks pretty clean but the 600 dirties the oil much faster.