Made from billet aluminum. This tank will not pollute the air and re-burn the gas and it will lengthen the life of engine oil. Oil Catch Tank collects the oil, moisture and blow-by gas to keep intake components cleans. Oil catch Tank is used in turbo applications specially. Oil Catch Tank collects the oil, moisture and blow-by gas that causes carbon and sludge build-up in the intake system and engine. Capacity: 600cc.