HP Marine 2-Stroke Oil (HPM)

Amsoil HP Marine Synthetic 2-Stroke and Marine Oil (HPM)
Data Bulletin 

Product Highlights

Excellent for Evinrude® E-TEC™ factory-lean setting (replaces Evinrude XD100™ 2-Cycle Oil). Helps prevent deposits, protects against wear, has low smoke, protects against rust and has low aquatic toxicity. Superior performance as an injection oil or at 50:1 pre-mix.

High-quality motor oil is critical for maximum performance in modern two-stroke marine motors. Direct fuel injection (DFI) improves combustion efficiency, delivering the extra power enthusiasts 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.

Package Sizes (HPM)

Code Sizes Units
HPMQT (HPMQT-EA) Quart Each
HPMQT (HPMQT-CA) Quart Case of 12
HPM1G (HPM1G-EA) Gallon Each
HPM1G (HPM1G-CA) Gallon Case of 4
HPM16 (HPM16-EA) 16-Gallon Keg Each
HPM30 (HPM30-EA) 30-Gallon Drum Each
HPM55 (HPM55-EA) 55-Gallon Drum Each
HPM55 (HPM27-EA) 275-Gallon Tote Each
  • Excellent for Evinrude® E-TEC™ factory-lean setting (replaces Evinrude XD100™ 2-Cycle Oil)
  • 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

Excellent 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 (see field study results). In 534 hours of field testing, HP Marine completely prevented piston skirt and cylinder bore scuffing, demonstrating its superior lubricity and ability to reduce friction between moving parts. It maintains a strong lubricating film even in lean-mix, severe-service conditions, helping marine engines achieve maximum life.

Outstanding 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 inhibited ring deposits that can cause 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.

Marine E-TEC Field Study Proves HPM Excells

HP Marine was installed in a 250-hp Evinrude E-TEC engine powering a heavy-duty marine rescue vessel. Following a 28-hour break-in period at the normal oil setting, the engine was programmed to its factory-lean setting and operated for 506 hours prior to disassembly. An ASTM calibrated rater examined and awarded each component either a merit rating on a scale of 0 to 10 (with 10 representing no distress) or a percentage rating (with 0 percent representing no distress). Results prove HP Marine provided exceptional wear protection and deposit control. For complete study results, visit amsoil.com/proof.

TYPICAL TECHNICAL PROPERTIES 2-Stroke (HPM)
Amsoil Marine Oil
Kinematic Viscosity @ 100°C, cSt (ASTM D445) 8.5
Kinematic Viscosity @ 40°C, cSt (ASTM D445) 46.8
Viscosity Index (ASTM D2270) 160
CCS Viscosity cP (ASTM D5293) 5610 (-15)
Pour Point °C (°F) (ASTM D97) -46 (-51)
Flash Point °C (°F) (ASTM D92) 86 (187)
Fire Point °C (°F) (ASTM D92 86 (187)
Four-Ball Wear Test
(ASTM D4172B@40kg,75°C, 1200rpm, 1hr), Scar, mm
0.36
Noack Volatility, % weight loss (ASTM D5800) 9.7
High-Temperature/High-Shear Viscosity cP (ASTM D5481) 4.2
Total Base Number 8.0
Brookfield Viscosity @ -40ºC, cP (ASTM D2983) 14,025
NMMA TC-W3® Rust Test Pass
Jaso M 342-92 Smoke Test (FD) Pass
TC-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

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