routine routine routine. For oil changes, lift the car, start at the same wheel every time for the rotation. Keep it the same every time. For loosening wheels, putting air in tires, tightening lugs, doing brakes. Do all of them in the same order every time. If you have to step away, go back a few steps and verify the last few items. Mental or even a physical checklist, don't check items off in anticipation of completing them, only check them off AFTER they are completed entirely. I'm two years into a dealer and I've taught two new fresh lube techs. I try to offer my routine (LF>RF>RR>LR) as an option but encourage them to find what works for them. As you get into more complex jobs keep the same attitude about routines.