Royal Purple® HP 2-C

Royal Purple® HP 2-C (formerly 2-Cycle TCW III) is a high performance engine oil that improves performance and dramatically reduces wear in two-cycle gasoline engines. It’s recommended for use in both pre-mixed and oil injected gasoline two-cycle engines in outboard motors, motorcycles, jet skis, chain saws, etc.

HP 2-C increases horsepower and reduces fuel consumption, heat, wear and emissions. Its synthetic solvency keeps spark plugs and exhaust ports clean as well. Its performance advantages come from a blend of synthetic oils plus Royal Purple’s proprietary Synerlec® additive technology. Synerlec®significantly increases the oil film strength for optimum engine efficiency and maximum protection.

HP 2-C is suitable for premix in snowmobiles; however, due to cold soak (low temperature pumpability issues with oil injected snowmobiles) Royal Purple recommends Snow 2-C for operation in temperatures below 20°F.

Unique Performance Advantages
  • Greater Wear Protection
  • Clean, Efficient Engines
  • Rust / Corrosion Protection
  • Increased Performance
  • Ashless to Minimize Exhaust Deposits
  • Environmentally Responsible

Royal Purple® Motor Oil

Royal Purple Motor Oil delivers superior protection and improves performance in four-cycle gasoline and diesel engines. It increases horsepower and torque, saves fuels and reduces heat, wear and emissions. It has unsurpassed oxidation stability that allows for extended oil drains and fewer oil changes, which saves you time and money and reduces the impact on the environment.

Royal Purple’s motor oils are API certified.

Royal Purple’s performance advantages come from a blend of synthetic oils plus Royal Purple’s proprietary Synerlec® technology. Royal Purple Motor Oil is compatible with other mineral and synthetic motor oils. It’s available in 0W40, 5W20, 5W30, 5W40, 10W30, 10W40, 15W40, 20W50, SAE 30, SAE 40 and SAE 50 weights.

For improved performance in two-cycle engines, check out Royal Purple HP 2-C.


Syn V EMD™ is recommended for EMD / GE diesel engines with silver-coated bearings.

Syn V EMD™ keeps EMD engines much cleaner than mineral EMD oils while providing superior anti-wear / anti-scuffing / anti-seizing protection.

Syn V EMD™ greatly extends oil and filter change intervals and reduces the fuel consumption and high oil consumption common in most EMD diesel engines.

Syn V EMD™ is formulated with Royal Purple’s proprietary Synerlec® additive technology, which is proven to make equipment run smoother, cooler, quieter, longer and more efficiently. It leaves a thin, tough, protective film on all metal surfaces, which protects engines by providing instant lubrication upon startup and acting as a preservative oil during shutdown.

Syndraulic® • High Performance Hydraulic Oil

Syndraulic® is a clean, long life, energy efficient, minimum leak, hydraulic oil possessing exceptional film strength and wear protection properties. It greatly increases both the life of the oil and the seals, filters and pumps of hydraulic systems.

Syndraulic® can lower operating temperatures and restore normal operation to erratically operating hydraulic systems.

Syndraulic® is formulated with Royal Purple’s proprietary Synerlec®additive technology, proven to make equipment run smoother, cooler, quieter, longer and more efficiently.


Synergy® is Royal Purple’s best-selling EP gear oil and is designed to smoothly lubricate gears under virtually all conditions.

Synergy® is an ultra-tough, long life, gear oil with slippery, synthetic molecules, which greatly increase its lubricity and oiliness properties. Gears run smoother, quieter, cooler, longer, and more efficiently without overhauls.

Synergy® gains its performance advantages over competing mineral and synthetic oils through its superior blend of synthetic base oils plus Synslide® additive technology, Royal Purple’s unique, proprietary, noncorrosive, EP technology.

Synergy’s ability to rapidly and completely separate from water prevents sludge and water commonly found in wet gear boxes (such as cooling tower gear boxes).

Synergy® protects gears in severe service applications where other EP oils often fail and is recommended for users looking for longer oil life and significantly improved gear box reliability and performance.

Download the Royal Purple Gear Lubrication Manual

For more information call 888-382-6300 or email

For Worm Gears, Royal Purple® recommends Synergy® Worm Gear Oil or Thermyl-Glyde® Worm Gear Oil.

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