Don't misunderstand my post. I was always the maint light nazi for my crew. If one of my guys didn't do a reset they would suffer one way or another. And for the record, the LOF price at most of the dealers I worked at came in way below the Jiffy Lubes of the world after they added on cost for checking t-case, diffs etc.
With the new style interval light Das is talking about, the stupid engineers designed it so that you have no idea if the reset worked if the light isn't currently on. Light comes on at 2,500 or 5,500 depending on driving habits (no actual sensor in the oil). If customer comes in at 2,300 and wants it changed due to time you still need to reset it eventhough the light isn't on, or it may turn on at 2,500. Even with the scan tool you could not read the lamp status counter. So a tech could do the reset procedure, have it not work, and they would not know it.