Performance Engineered Lubricants - Since 1919


D-A has the Engine Oil & Lubricants for Mining & Quarry Operations and Vehicles.

Your engine oil is the blood of your equipment. Long hours and heavy loads take their toll on bearings and other moving parts. It pays to use the most dependable, highest quality oils, lubricants and coolants to keep your heavy duty equipment working.

work site vehiclesEngine Oils
D-A has a long list of high-quality engine oils that support the performance requirements of your heavy-duty vehicle manufacturer's specifications. Underground or above-ground, D-A offers the engine oil you need!

Transmission Lubricants
Modern transmissions are complex and expensive. D-A has the right transmission lubricant for you, including new synthetic blends for longer life. Take a look at our complete offering for transmission lubricants.

Differentials/Final Drives
If you are looking for a differential lubricant that will out-perform conventional gear lubricants to promote longer gear life and better equipment operating economy, we have what you need.

Modern hydraulic systems require special lubricants to continue functioning at maximum capacity. D-A has the right hydraulic fluids for you, including new synthetic blends for longer life. D-A also offers eco-friendly hydraulic oils.

Specialty Mining Fluid
D-A GearTec MGO-Plus is a premium emulsifiable, industrial, extreme pressure fluid. Designed with specialized additives, MGO-Plus provides protection to industrial gear systems operating in extremely wet environments.

D-A Crusher™ Lubricant provides excellent performance in gyratory, cone and jaw crushers. It is also well suited for use in screen gearboxes and bearings requiring gear oil lubrication. Crusher Lubricant is specially formulated to be compatible with bronze and brass bushings and bearings.

Rock Drilling
D-A offers rock drilling lubricants designed to protect equipment and increase functional equipment time.

No vehicle can survive long without a grease designed specifically for its particular needs. D-A offers a full line of superior-performance products that support the OEM performance requirements, they extend component life and can reduce equipment ownership costs.

DefendAL™ antifreeze/coolant products offer superior coolant system protection by preventing scaling, foaming, and corrosion while at the same time offering excellent liner pitting protection. In addition, they offer maintenance cost reduction opportunities by minimizing coolant related water pump seal leakage, improved solder and aluminum protection, ease of use and through superior product performance.

  • DefendAL™ Universal Antifreeze/Coolant - More info.
  • DefendAL™ Heavy Duty Pre-Charged Antifreeze/Coolant - More info.
  • DefendAL™ Heavy Duty Extended Life Antifreeze/Coolant - More info.
  • DefendAL™ Heavy Duty Nitrite-Free Extended Life Antifreeze/Coolant - More info.

Fuel Conditioners
Diesel fuels react differently in hot and cold weather. Make sure your fuel is working properly by using D-A additives specifically designed for the changing seasons.