2012 Dodge Ram 2500
15,000 miles or every year. I never make the 15,000 miles so I change mine every year, all 3 of them since I have the Throttle Up filter kit on my 2012.I'll cut it open tomorrow and get pics if I get back to the shop in time... I'm curious now too... also since my 2012 only has one how often do you think I should be changing it?
Just my $0.02