Hey all, thanks for the replies. This is really encouraging although not surprising. The replies above are the reason I wanted the 7.3. I hope to see the kind of mileage out of mine that you guys are getting. Mine's still a baby though with only 80k on the clock. I just put the AIS on it today as the first step towards making it go the distance. I'm gonna roll with 5k oil change intervals because I don't work it hard. I'm using the Motorcraft 15-40 oil w/Motorcraft oil filters. Have you guys had good luck with this oil?
2000 F250 Crew Cab 4x4, Auto Trans., Ford Severe Duty AIS, WARN Hubs, Ranch hand Grill Guard & Replacement Rear Bumper, 285/75 BFG A/T's, Cover King custom seat covers, Tint & Viper Alarm, Retrax Bedcover
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