After rechecking the GPS, I realized they are indeed located at the Sunoco gas station -the dozen or so BMWs should have tipped me off!
He told me he serviced his Range Rover there and they were very fair. So I decided to take his advice I had heard of...
Having owned BMW's for 34 years and done a lot of major/minor repairs and maintenance myself, I have to say Bolts is the best BMW...