4200 on the first one, Elected to change #2 and fuel filter at 7400, I have 9800 now and reset the light at 8300. The oil sample was pulled from # 2 (Did it at the DC dealer $ 50.00)(Sent sample to Blackstone. It came back good and potential to extend # 3 to 5000 miles. I'll keep you posted.

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07.5 3500 Quad, SRW, 4X4, Laramie, Leathered, Dark Metallic Gray, 6.7, 68RFE, 20K Reese, Ride Rite's, 2 Viair air compressors, Bully steps, Kleinn Locomotive air horns (5 in all), Billet polished locking fuel door, 'A' pillar mount Auto Meter Pryo, PML X-deep trans pan
06 Durango 285 RL 5'er Lifted by KZ