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. 

Send Please complete all required fields. Sending

Thank You: Your information has been sent.

There was a problem sending your information. Please try again later or contact us by phone.

Contact Us
Gear Oils Product Header Image Gear Oils Product Header Image

Gear Oils

The Dyna-Plex 21C® line of gear oils are specifically formulated for heavy-duty trucks and machinery with performance additives to protect under extreme pressure and in extreme temperature environments.

Synthetic

shield Created with Sketch.
collapse
Dyna-Plex 21C Synzol Synthetic Gear Oils

Dyna-Plex 21C Synzol Synthetic Gear Oils

Heavy-Duty On-Road, Heavy-Duty Off-Road

Dyna-Plex 21C Synzol Synthetic Gear Oils are extreme pressure synthetic gear oils for use with hypoid gears in differentials and, where applicable, manual transmissions found in cars, trucks, and heavy equipment. It is designed to outperform petroleum gear oils.

  • Extreme pressure (EP) fortified for heavy load gear protection
  • Resist heat degradation, contain antifoam properties, promote long seal life
  • Contain rust and oxidation inhibitors
  • Shear stable and maintain viscosity
  • Compatible with most limited slip differentials and provide all season performance
Heavy-Duty On-Road, Heavy-Duty Off-Road

Dyna-Plex 21C Synzol Synthetic Gear Oils are extreme pressure synthetic gear oils for use with hypoid gears in differentials and, where applicable, manual transmissions found in cars, trucks, and heavy equipment. It is designed to outperform petroleum gear oils.

  • Extreme pressure (EP) fortified for heavy load gear protection
  • Resist heat degradation, contain antifoam properties, promote long seal life
  • Contain rust and oxidation inhibitors
  • Shear stable and maintain viscosity
  • Compatible with most limited slip differentials and provide all season performance
Synzol SAE 75W-90, 80W-140
shield Created with Sketch.
collapse
Dyna-Plex 21C Synzol LDS Synthetic Gear Oils

Dyna-Plex 21C Synzol LDS Synthetic Gear Oils

Heavy-Duty On-Road, Heavy-Duty Off-Road

Dyna-Plex 21C Synzol LDS Synthetic Gear Oils are premium quality, long drain, synthetic gear oils for use with hypoid gears in differentials and, where applicable, manual transmissions found in cars, trucks, and heavy equipment. These oils are non-original equipment manufacturer (OEM) approved products designed for use up to 500,000 miles in over-the-road truck differentials where the equipment manufacturer supports this drain interval. They contain field proven technology that demonstrated outstanding wear protection and oxidation resistance throughout a 500,000-mile service life.

  • Extreme pressure (EP) fortified for heavy load gear protection and resist head degradation
  • Contain antifoam properties and promote long seal life
  • Contain rust and oxidation inhibitors, shear stable and maintain viscosity
  • Compatible with most limited slip differentials and provide all season performance
Heavy-Duty On-Road, Heavy-Duty Off-Road

Dyna-Plex 21C Synzol LDS Synthetic Gear Oils are premium quality, long drain, synthetic gear oils for use with hypoid gears in differentials and, where applicable, manual transmissions found in cars, trucks, and heavy equipment. These oils are non-original equipment manufacturer (OEM) approved products designed for use up to 500,000 miles in over-the-road truck differentials where the equipment manufacturer supports this drain interval. They contain field proven technology that demonstrated outstanding wear protection and oxidation resistance throughout a 500,000-mile service life.

  • Extreme pressure (EP) fortified for heavy load gear protection and resist head degradation
  • Contain antifoam properties and promote long seal life
  • Contain rust and oxidation inhibitors, shear stable and maintain viscosity
  • Compatible with most limited slip differentials and provide all season performance
Synzol LDS SAE 75W-90, 80W-140
shield Created with Sketch.
collapse
Dyna-Plex 21C Synzol EPG 800 Series

Dyna-Plex 21C Synzol EPG 800 Series

Heavy-Duty On-Road, Industrial

Dyna-Plex 21C Synzol EPG 800 Series Oils are synthetic extreme pressure (EP) industrial gear oils for use in enclosed spur, bevel, herringbone, helical, and chain drive gear boxes and other applications that require an AGMA EP or AGMA S gear oil. They are formulated to outperform petroleum EP gear oils and provide excellent gear and bearing protection in extreme hot and cold temperature, heavily loaded environments.

  • Sulfur/phosphorus additives for EP protection
  • Rust and oxidation inhibited, shear stable and non foaming
  • Rapidly separates from water
  • Compatible with seals and petroleum EP oils
Heavy-Duty On-Road, Industrial

Dyna-Plex 21C Synzol EPG 800 Series Oils are synthetic extreme pressure (EP) industrial gear oils for use in enclosed spur, bevel, herringbone, helical, and chain drive gear boxes and other applications that require an AGMA EP or AGMA S gear oil. They are formulated to outperform petroleum EP gear oils and provide excellent gear and bearing protection in extreme hot and cold temperature, heavily loaded environments.

  • Sulfur/phosphorus additives for EP protection
  • Rust and oxidation inhibited, shear stable and non foaming
  • Rapidly separates from water
  • Compatible with seals and petroleum EP oils
Synzol EPG 804, 805, 806, 807, 808

Premium

shield Created with Sketch.
collapse
Dyna-Plex 21C Sirius 600 Series Gear Oils

Dyna-Plex 21C Sirius 600 Series Gear Oils

Heavy-Duty On-Road, Heavy-Duty Off-Road, Industrial

Dyna-Plex 21C Sirius 600 Series Gear Oils contain an extreme pressure additive system. This allows the lubricant to remain water, rust and corrosion resistant in severe situations. These lubricants excel in industries where load carrying capacity is required. The combination of high viscosity base oils and additives maintain shear stability and reduce wear, even under hot, wet and dirties high load or extreme pressure conditions.

  • Adhere to metal, even under the most severe conditions
  • Unique characteristics are imparted by a polar agent with special cohesive and adhesive properties and help extend component life
  • Suited for a wide variety of industrial and mobile equipment, enclosed gear systems, chain drives, sprockets, plain and antifriction bearings, slide guides and flexible couplings
  • Excel in the lubrication of enclosed gear drives and reducers from fractional horsepower gear motors to the large high horsepower units on rolling mills and hoists
Heavy-Duty On-Road, Heavy-Duty Off-Road, Industrial

Dyna-Plex 21C Sirius 600 Series Gear Oils contain an extreme pressure additive system. This allows the lubricant to remain water, rust and corrosion resistant in severe situations. These lubricants excel in industries where load carrying capacity is required. The combination of high viscosity base oils and additives maintain shear stability and reduce wear, even under hot, wet and dirties high load or extreme pressure conditions.

  • Adhere to metal, even under the most severe conditions
  • Unique characteristics are imparted by a polar agent with special cohesive and adhesive properties and help extend component life
  • Suited for a wide variety of industrial and mobile equipment, enclosed gear systems, chain drives, sprockets, plain and antifriction bearings, slide guides and flexible couplings
  • Excel in the lubrication of enclosed gear drives and reducers from fractional horsepower gear motors to the large high horsepower units on rolling mills and hoists
Sirius 602, 603, 604, 645
Sirius 605, 606, 607, 608

Conventional

shield Created with Sketch.
collapse
Dyna-Plex 21C Galaxy 700 Gear Oils

Dyna-Plex 21C Galaxy 700 Gear Oils

Heavy-Duty On-Road, Heavy-Duty Off-Road

Dyna-Plex 21C Galaxy 700 Gear Oils contain rust and oxidation additives to resist the formation of harmful contaminants, thereby reducing wear and extending the life of gears and transmissions. Special additives also prevent these oils from shearing or breaking down, even under severe load situations.

  • Perform well in both high and low temperatures
  • Maintain outstanding viscosity stability over long periods of time
  • Ensures limited slip performance of hypoid gears
  • Fuel efficient and provides ultimate transmission and differential protection for trucks and offroad equipment
Heavy-Duty On-Road, Heavy-Duty Off-Road

Dyna-Plex 21C Galaxy 700 Gear Oils contain rust and oxidation additives to resist the formation of harmful contaminants, thereby reducing wear and extending the life of gears and transmissions. Special additives also prevent these oils from shearing or breaking down, even under severe load situations.

  • Perform well in both high and low temperatures
  • Maintain outstanding viscosity stability over long periods of time
  • Ensures limited slip performance of hypoid gears
  • Fuel efficient and provides ultimate transmission and differential protection for trucks and offroad equipment
Galaxy 700 SAE 80W-90, 80W-140
shield Created with Sketch.
collapse
Dyna-Plex 21C Mizar 400 Series

Dyna-Plex 21C Mizar 400 Series

Heavy-Duty On-Road, Heavy-Duty Off-Road, Industrial

Dyna-Plex 21C Mizar 400 Series lubricants have been specifically designed for industrial and construction applications where load and atmospheric operating conditions create extreme pressure and high temperatures. A polar agent has been added to increase the adhesive and a cohesive quality, so even in severe conditions, Mizar adheres to metal and resists separation.

  • Provide high oxidation stability, antifoam properties and effective rust and corrosion resistance
  • Ensure proper lubrication and extend machinery life
  • Suited for a wide variety of industrial and mobile equipment applications, including enclosed gear systems, chain drives, sprockets, plain and antifriction bearings and slide guides
  • Suited to the lubrication of a variety of gears, including spur, bevel, herringbone and worm design
  • Suited to industrial hypoid gears where speed, temperature and load are not too high
Heavy-Duty On-Road, Heavy-Duty Off-Road, Industrial

Dyna-Plex 21C Mizar 400 Series lubricants have been specifically designed for industrial and construction applications where load and atmospheric operating conditions create extreme pressure and high temperatures. A polar agent has been added to increase the adhesive and a cohesive quality, so even in severe conditions, Mizar adheres to metal and resists separation.

  • Provide high oxidation stability, antifoam properties and effective rust and corrosion resistance
  • Ensure proper lubrication and extend machinery life
  • Suited for a wide variety of industrial and mobile equipment applications, including enclosed gear systems, chain drives, sprockets, plain and antifriction bearings and slide guides
  • Suited to the lubrication of a variety of gears, including spur, bevel, herringbone and worm design
  • Suited to industrial hypoid gears where speed, temperature and load are not too high
Mizar 402, 403, 407, 445