AMSOIL HP Marine® 100% Synthetic 2-Stroke Oil

AMSOIL HP Marine® Synthetic 2-Stroke Oil is a high-quality oil for modern two-stroke marine motors. It excels in direct fuel injection (DFI) systems, improving combustion efficiency and providing power while meeting emission standards. This oil is formulated to resist the elevated heat and friction of modern two-stroke marine engines, reducing the likelihood of scuffing and wear. It's designed for use in various two-stroke outboard motors including Evinrude® E-TEC™, Mercury® EFI & Optimax, Yamaha, and others, either as injection oil or a 50:1 pre-mix. HP Marine provides increased lubricity for reduced wear, even in lean-mix operations. The oil helps prevent deposits and protects against wear, rust, and has low smoke emissions. It's compatible with mineral and synthetic TC-W3-type two-stroke oils. AMSOIL HP Marine® is also backed by the AMSOIL Limited Warranty and is suitable for applications where warranty compliance is required.

5.0
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112
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This AMSOIL product is available in:

Individual Quart Bottles
Cases of 12 Quart Bottles
Individual Gallon Jugs
Cases of 4 Gallon Jugs
16 Gallon Kegs
Individual 55 Gallon Drums
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Product Code:

HPMQT-EA

AMSOIL AMSOIL HP Marine® 100% Synthetic 2-Stroke Oil Description

AMSOIL HP Marine® Synthetic 2-Stroke Oil is a high-quality oil for modern two-stroke marine motors. It excels in direct fuel injection (DFI) systems, improving combustion efficiency and providing power while meeting emission standards. This oil is formulated to resist the elevated heat and friction of modern two-stroke marine engines, reducing the likelihood of scuffing and wear. It's designed for use in various two-stroke outboard motors including Evinrude® E-TEC™, Mercury® EFI & Optimax, Yamaha, and others, either as injection oil or a 50:1 pre-mix. HP Marine provides increased lubricity for reduced wear, even in lean-mix operations. The oil helps prevent deposits and protects against wear, rust, and has low smoke emissions. It's compatible with mineral and synthetic TC-W3-type two-stroke oils. AMSOIL HP Marine® is also backed by the AMSOIL Limited Warranty and is suitable for applications where warranty compliance is required.

HP Marine® Synthetic 2-Stroke Oil

High-Performance Marine 2-Stroke Oil

High-quality oil is critical for maximum performance in modern two-stroke marine motors. Direct fuel injection (DFI) improves combustion efficiency, delivering the extra power boaters want, while leaner gas-to-oil ratios provide the reduced exhaust emissions the government mandates. The leaner ratio leaves less oil to lubricate and protect these hotter, more powerful motors, which invites deposits and wear that threaten engine performance and life. HP Marine is proven to excel in these harsh conditions. It controls performance-robbing friction, heat and wear, yet produces low smoke and has low aquatic toxicity properties. It’s an oil as advanced as the engines it protects.

AMSOIL HP Marine®️ 100% Synthetic 2-Stroke Oil
  • Excellent for Evinrude E-TEC factory-lean setting
  • Helps prevent deposits
  • Protects against wear
  • Low smoke
  • Protects against rust
  • Low aquatic toxicity
  • Superior performance as an injection oil or at 50:1 pre-mix

Outstanding Wear Protection

The elevated heat and friction of modern two-stroke marine motors can exceed the film strength of inferior oils, increasing the likelihood of scuffing and wear. HP Marine’s exclusive synthetic formulation provides increased lubricity for reduced wear during normal and lean-mix operation.

HP Marine was used in a 40-hp Evinrude E-TEC outboard motor owned by a northern Minnesota fishing outfitter. After a full season of rental use with the motor set at its factory-lean setting, HP Marine prevented piston ring sticking and piston scuffing for maximum power and long engine life. Results prove HP Marine’s ability to protect two-stroke engines in the toughest conditions, including lean-mix operation, helping enthusiasts get the most out of their equipment.

Excellent Deposit Control

HP Marine is formulated with MAXDOSE,™ a system of advanced additives for “super-clean” operation. It helps prevent deposits that lead to poor performance. In field testing, HP Marine prevented ring sticking and ring jacking (carbon buildup behind the ring, forcing it outward), a phenomenon that occurs in modern DFI outboard motors. It also virtually eliminated exhaust port deposits for reliable, efficient operation.

No piston ring sticking for maximum power. No scuffing for long engine life.

TYPICAL TECHNICAL PROPERTIES

HP Marine® Synthetic 2-Stroke Oil (HPM)

Kinematic Viscosity @ 100°C, cSt (ASTM D445) 7.3
Kinematic Viscosity @ 40°C, cSt (ASTM D445) 37.3
Viscosity Index (ASTM D2270) 160
Pour Point, °C(°f) (ASTM D97) -55(-67)
Flash Point, °C(°f) (ASTM D92) 104(219)
Fire Point, °C(°f) (ASTM D92) 104(219)
Brookfield Viscosity @ -40°C, cP (ASTM D2983) 13,696
NMMA TC-W3®️ Rust Test Pass
Jaso M 342-92 Smoke Test (FD) Pass
JTC-W3 Lubricity Test (ASTM D4863) Pass
OECD - Guideline 203, Fish Acute Toxicity Test 100% Survival Rate
OECD - Guideline 202, Daphnia Acute Immobilization Test 100% Survival Rate

APPLICATIONS

Use in two-stroke marine applications that specify TC-W3, including those made by Johnson/Evinrude, FICHT E-TEC, Mercury EFI & Optimax, Yamaha, Nissan, Tohatsu TLDI, Suzuki, Mariner, Force. Use as injection oil or 50:1 premix (2.6 oz. per U.S. gallon of gas).

COMPATIBILITY

Compatible with mineral and synthetic TC-W3-type two-stroke oils; however, mixing two-stroke oils should be minimized.

TECHNICAL SERVICES

For immediate answers to your technical questions call (715) 399-TECH (8324) between 8 a.m. and 5 p.m. Central time or email tech@amsoil.com.

WARRANTY SECURE®

HP Marine Synthetic 2-Stroke Oil is Warranty Secure, keeping your factory warranty intact. HP Marine is a high-performance replacement for vehicle manufacturer-branded products and is also backed by the AMSOIL Limited Warranty (G1363). For details, visit AMSOIL.com/warrantysecure.

HEALTH & SAFETY

This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Safety Data Sheet (SDS). An SDS is available at AMSOIL.com or upon request at 715-392-7101. Keep Out of Reach of Children. Don’t pollute. Return used oil to collection centers.

AMSOIL HP Marine® 100% Synthetic 2-Stroke Oil Reviews

5

star rating

Great for my outboard

Replaced another brand with Amsoil HP Marine- same 50:1 premix but less smoke and runs smoother at idle. Only regret was not switching sooner!

5

star rating

Good value

I have only been using this oil for a year now but it's fully synthetic and a reasonable price

5

star rating

River Cat

Great product all my river boat buddies run this oil and Love it 👍🤝

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