Hello ive been a driver for about 10 years many moons ago I was independent. For the last several ive been a co driver making very good money id leis to go independant again. My question is this ive been tracking the expenses on the co truck for the past year and wouldnlike to know if this is a good barometer for the expenses regarding my own truck. I'm referring to breakdowns and maintenance not the extras I would have to spend for.better fuel mileage etc.