In a moments notice when you are traveling or even perhaps in an emergency that is fine. The biggest problem is that they are not all properly trained and they are not always looking out for your best interest. We had a gentleman decide to get a discounted oil change at a quick lube. It was anything but a deal. They broke his oil pan and it had to be replaced. The person who changed his oil had no idea what they were doing and instead of a $25 oil change he got to purchase an oil pan. I know the difference was more than the extra $15 he would have spent here, and no they did not repay him for his loss of time and the repair. Yes it is oil and filter, the difference is the level of training and expertise that goes into it. Give us a call and let us take care of you.