Contact a Dyna-Plex 21C Expert Today

Dyna-Plex 21C products are in demand for on- and off-road fleets and equipment, industrial equipment, and metalworking and cutting applications. If you have a specific question or area of interest, the Dyna-Plex 21C team at PetroChoice, Inc. is ready to help. 

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Dyna-Plex 21C Heavy-Duty Products
For Off-Highway Equipment and Machines

Developed exclusively for the demands of heavy equipment, Dyna-Plex 21C® Heavy-Duty products, exclusively offered by PetroChoice, are trusted by owners and operators to protect some of the world’s largest engines and equipment. This full line of heavy-duty lubricants offer protection for heavy construction, agriculture, mining and manufacturing — anywhere costly equipment needs to operate at peak performance to ensure profitability.

Proven Knowledge of Heavy-Duty Equipment Needs

Technical Expertise for Off-Road Machines — PetroChoice features some of the nation’s most knowledgeable experts in heavy-duty machinery, including many who worked in the industries they now serve. Dyna-Plex 21C advisors stay up-to-date with equipment manufacturing specs and requirements to provide the right recommendations to protect your investments in equipment.

Heavy-Duty Solutions and Long-Term Savings — Maintaining the effectiveness and value of heavy-duty machinery is the top priority for off-road applications. Dyna-Plex 21C Heavy-Duty experts from PetroChoice will catalog all equipment and offer solutions for consolidating lubrication brands and the number of products used in order to gain efficiencies — all while improving protection and performance. That’s the legacy of the Dyna-Plex 21C line combined with the equipment and operational knowledge from the PetroChoice team.

“We don’t try to find customers for our products. We find products for our customers.”
– Mark Isgette, PetroChoice Territory Sales Manager

Heavy-Duty Solutions for Today’s Heavy-Duty Demands

Pushing Equipment to the Max — As production demands grow, heavy-duty equipment is being driven to maximum capabilities. More loads, lifts or digs per day requires a lubricant line proven to handle the heavy workload and protect equipment — beyond the manufacturer’s anticipated limits.

Constant and Consistent Power for Hydraulics — In the past three decades off-highway machinery has become reliant on ever-powerful large hydraulic systems. These hydraulic drives require high-performing fluids and oils that run clean and resist heat to prevent components from failing. Our technical advisors understand the unique needs of this equipment, and can recommend the right Dyna-Plex 21C Hydraulic lubricants to meet the latest OEM specs and improve hydraulic operations.

Zinc-Free and Other Specialty Products — The benefits of choosing zinc-free lubricants stretch beyond environmental concerns. Dyna-Plex 21C offers zinc-free high-viscosity oils that build efficiencies into operations, allowing equipment to operate with less energy. With manufacturers such as John Deere and Hitachi recommending zinc-free oils for new equipment, trust PetroChoice for the latest lubrication formulations and blends.


Large trucking and construction maintenance shops don’t always have time to study engine specs. We keep customers up to speed on what products are best for new equipment.

In 2016 Kenworth Trucks introduced new models and engines, and a recommendation to use 10W-30. But, customers had used 15W-40 for years, and many didn’t want to switch. Engine Guard oil analysis showed using the heavier 15W-40 in these new engines caused a loss in fuel mileage. Higher weight oils cause more combustion, consuming more fuel. Using Dyna-Plex 21C 10W-30 saved money on oil and the overall fuel cost.

Learn more about Engine Guard