For the first two seasons, when filming on the Universal Studio lot, this is the engine that was used, as it was readily available. Engine 60 became Engine 51 by putting magnets or stickers over the numbers 60 on the doors and the front. A sister, Engine 127, at the Station 127 in Carson, was used when they filmed off the lot, at the refinery, or at the old fire station. This engine was involved in a traffic accident and destroyed leaving engine 60 as the only original E51.