Moroso Dry Sump Tanks separate air quickly from oil, prevent foaming and insure a continuous supply of oil to the pump under all racing conditions! As the oil enters the tank, it rotates around the tank wall and deaerates by spreading over a large surface area, allowing trapped air bubbles to dissipate quickly. This then lets the restored oil flow easily to the bottom outlet of the tank where it can return to the pump and engine. Tanks are supplied with or without integral filtered breather tanks and all have carefully engineered inlet locations with -AN fittings, large diameter billet aluminum screw-on filler caps and drain plugs.