I was wanting to know how many member os GMTC use quick lubes for oil changes, transmission fluid changes, differential fluid, etc. Me personally I worked in teh quick lube industry for ~8 years and I can say that MOST of the lube techs that work there are ROTTEN. They don't change drain lug gaskets, they miss grease fittings, they leave differential plugs out, strip stuff, etc. I'm not just saying this, but I actually was one of the few that knew how to do their job, most don't care. I will never take my vehicle to a quick lube. I will change my own fluids as long as I am physically capable and when I am no longer capable, I will take it to an experienced mechanic. About the only thing I have to take my vehicle to a mechanic for is to do a coolant system flush.