Complex sentence: The condensing system proved to be extremely efficient and reduced water consumption by as much as 90% by using the same water up to eight times over, giving the Class 25 locomotive a range of between water refills.
Split into simpler sentences: The condensing system proved to be extremely efficient and reduced water consumption by as much as 90% by using the same water up to eight times over. This gave the Class 25 locomotive a range of between water refills.