Dennis Oil Company’s hydraulic oils are designed to give maximum protection to hydraulic pumps. They are formulated from highly refined oils, with anti-wear, oxidation, and corrosion inhibitors, plus foam and aeration suppressants. Our premium hydraulic oils offer outstanding resistance to sludge formation, are chemically stable, and exhibit excellent anti-wear protection. That’s why they trusted in high-pressure industries like agriculture, mining, and heavy construction.

A mechanic repairs a hydraulic excavator system

Features and Functions

  • Viscosity: How well the fluid flows in certain temperatures
  • Low-temperature fluidity: Ease of flow under low temperatures
  • Thermal and oxidative stability: Preventing contamination through a sludge build-up
  • Hydrolytic stability/water tolerance: Preventing contamination through water
  • Cleanliness and filterability: Regular maintenance ensures reduced contamination
  • Demulsibility: Ability of the component to filter out water from the oil
  • Anti-wear: Features that improve the life of components
  • Corrosion control: preventing corrosion of the components

Product List

DOC XHD 32, 46, 68, 100 Hydraulic Oils are formulated from highly refined paraffinic, high V.I. Group II base oils, anti-wear, oxidation and corrosion inhibitors, and foam and aeration suppressants. These oils offer outstanding resistance to sludge formation, are chemically stable, and exhibit excellent anti-wear protection in high pressure-high output industrial equipment. 6000 + hours oxidation test

DOC Premium UTF Multi weight, all-season fluid with anti-rust, anti-foam, and oxidation inhibitors heavy-duty J20-C. This product is a highly developed hydraulic/transmission fluid, which performs the following functions – Lubricates the transmission, differential and final drive gears, Acts as a power steering, power brake, power take-off and implement drive fluid, Provides a medium with the correct friction and heat transfer characteristics for proper operation of the tractor wet brakes and power take-off.

Wear Pruf  R & O A/W 32, 46, 68 Hydraulic Oil meets major hydraulic pump and component manufacturer’s specifications, including Denison and Vickers Vane Pump Tests.  These oils also are approved by Cincinnati Milacron specifications for use in systems, which require anti-wear hydraulic fluids

DOC Non-Detergent 10, 20, 30, 40, 50-Hydraulic, gearbox, Non-Detergent applications, usually older equipment

DOC MAGNUM 9600 ES SERIES Hydraulic Oils are ashless industrial fluids that are primarily recommended for use in systems that are sensitive to the presence of zinc and other metals. However, they can be used in most applications where zinc-containing oils would normally be recommended with improved performance resulting in longer pump life and more efficient running equipment.

DOC EHDLP Hydraulic Oil is a premium anti-wear hydraulic oil with a high viscosity index as well as a low pour point.  It has been specially formulated for use in mobile equipment hydraulic circuits where wide temperature ranges are encountered.  EHDLP Hydraulic Oil is highly recommended for use in mobile and other industrial equipment in heavy-duty, all-weather service.  Formulated for Lift or Boom Trucks “Cherry Pickers” to be both Di-electrically stable and its low pour point will eliminate those “choppy” extensions in cold weather.