Other companies may claim to have radically long oil or filter change intervals but what they fail to clearly state is the following: in order to extend your oil and filter change intervals you have to get your oil clean first! Once your oil is clean all filter and oil change intervals can be extended, and no filter cleans better than Insane Diesel's EXTREME filter. Our filter element change intervals • Standard filter element change interval is every 15K miles for diesel and gas engines. • After oil analysis shows that your oil is coming out healthy and clean, you can extend the element change interval to 25K and even up to 50K, but this requires condition based monitoring with oil analysis. Oil change intervals • No matter what anyone tells you, the only way to know when you can run longer on the same oil is to use condition based monitoring with oil analysis. Every engine will respond differently to our filter and only oil analysis will give you the insight you need to know the unique trends of your vehicle's performance.