As it pertains to choosing between changing the oil for individuals driving their personal SUVs and for fleet delivery vehicle managers you have to take into account the full time, not merely the total amount of money charged per vehicle. It might be enticing to improve the oil for V-8 SUV owners at $45.00 a place, as opposed to deal with the cutthroat competition of bidding on fleet oil change services, but you have to remember one thing; "The Money Is In the Time and Process, Not the Unit Charge Rate," so, let's talk important tracking software.You see, not long ago, I was reminded of the significance of production in the services business, when I was asked with a start-up entrepreneur of on-site auto maintenance. He asked point blank; "How many oil changes may be completed with a decent crew (I am assuming 2 individuals to a crew/truck) in a 8 hour day making use of your trucks and methods?"Okay, here's my experience; with full production - Six Sigma style - vehicles in a row (fleets) the clear answer is 100s with a staff of three. Personal cars, all different, you will need very competent auto mechanics with experience 5-6 each hour with 2 people maximum. Needless to say, there is more to the story, in fact his next question was even blunter and I must say directly on target too; "Do the trucks you employ work on one vehicle at a time or multiple simultaneously?"When doing fleets you employ an assembly line methodology, so first, you begin the motors on five vehicles, nevertheless, you pop the hoods on 15 in the row. After 8-minutes, you turn off the initial five, start the 2nd five, drain the initial five drain plugs, you get the idea. Or, you employ evacuation systems. It's a process, the money is in the "time" not the job or cost per unit. Travel time is job time in addition, including chasing parts, filters - especially when you're paying automotive technicians to fetch oil filters, fuel filters, and such transportation services.Indeed, I've always instructed our crews on the need to honor the idea of JIT - just in time inventory, that is to state have the supplier, NAPA Auto Parts for instance, deliver the filters needed seriously to the job site, why pay to stock the filters, inventory them, transport them, when these auto part companies deliver and can do anything to earn your business? In the event that you are going to run a car business if you are dealing with private owners of SUVs or those in control of large fleets of vehicles, then you definitely need to operate it with production in mind. Please think over all of this and think on it..