I have the Oilguard on my early '99 F350 for three years now. I've been happy with it. Since they sold themselves to the devil and now have jacked up their prices on the kit and filters, I went ahead and bought the Frantz Bypass Oil setup for my '02 Excursion. I just recieved the kit and am pretty impressed with the workmanship. The cost of the kit was $218 plus shipping, by far the most affordable kit out there. I wished I would've considered this kit for the F350.