I'm active on an auto forum and a question came up about changing spark plugs. On some engines today it is a bit complex but this guy had a solution. Part of first comment: Can I just do this myself? I've replaced plugs in other vehicles and it's always been a simple procedure. I might have to buy a torque wrench at Lowe's and then return it, but I have all the other needed tools.
I mentioned ethics in returning the tool. His reply:
Not sure why ethics is involved? Using a torque wrench on spark plugs doesn't cause any wear and tear. Lowe's can easily sell it as new after being returned.