• Concentric variable flow oil pumps will deliver from 1% to 3% improvement in fuel economy in almost any application     • Combined with a variable flow water pump, they can reduce parasitic losses from diesel engines by as much as 5%. depending on the vehicle's drive cycle     • Works by matching oil and water flow to demand, so reducing power waste and fuel consumption     • Robust reliable design applicable to petrol and diesel engines, passenger cars and trucks, on and off-road vehicles