It depends on how hard you drive and the kind of driving! Ideling alot shortnes oil changes and you dont know how much it ideled on the dealer lot. If you do more highest driving the oil lasts longer too. From what I have heard from other guys on the forum any where from 1,000miles to 4,500 is normal on the first change, so you are doing great!
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07 Dodge 3500 6.7 6spd Manual, Inferno Red, ProComps Extreme AT 305-65-17, AFE intake w/ torque tube. MP-8 & Edge Juice W/ Attitude! Valair New12.25" 3400# Dual Disk Ceramic/Ceramic on stock Hydro's, 10 months old w/29,500+miles. A big thank you to John at
Holland Court Diesel & Dan at Valair

!