1. 2002 Chev 2500HD ECLB 4X4 purchased new in November of 2001.

2. LB7

3. Purchased Cat base and Cat 1R-029 filter in July of 2003 but horror of horrors did not install until June of 2007 at 69,151 miles and 2,024 hours. Currently have 91,704 miles and 2,655 hours. I use Kennedy’s fuel pressure gauge to determine when to change filters. So far, Cat filter needs to be changed at about 300 hours. Wix 33910 filters in OEM location looked new. I cut open the filters when removed. As soon as I get home, I will check fuel pressure again and change just the Cat filter and recheck the fuel pressure to determine if the OEM filter needs to be changed. When I exhaust my current supply of Wix 33910 filters, I will change to the new OEM filter. I try to never let my 56 gallon fuel tank get below half full.

4. Still have original injectors.