HMT PREMIUM HYDRAULIC OIL 46 is a quality anti-wear hydraulic fluid which provides cost effective and reliable protection and performance in most industrial and mobile applications. Good demulsibility to resist formation of water-in-oil emulsions and prevent consequent damage to pump and hydraulic system cleanliness: Meets cleanliness requirement of ISO 4406 class 21/19/16. ISO 11158 (HM fluids), DIN 51524 Part 2 HLP type.