Hello, my son's gal has a Ford five hundred sedan and had been told by a "shop" that her starter was bad. I showed my son how to clean the battery terminals and then tested the voltage with my electrical tester. It showed 12.60 v at the battery which is good. When cranking the motor to start, the voltage typically dropped into the mid 11s, once into the high 10v range. As a comparison test, we did the same test to my 4 cylinder 1994 Camry and it went from 12.65 to the mid 11s as well when cranking, with about a year old Bosch top of line battery. Question - is a drop into the mid 11s or high 10s unacceptable when cranking the engine? Everything else seems unremarkable, nothing weird, and it starts within a few cranks. Thanks for your input.