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Replacement For Mercury Optimax DFI 2-Cycle Oil

AMSOIL HP Marine 2-Stroke Injector Oil A reader asks: I’ve got a Mercury Optimax 150 outboard motor. Do you have a substitute for Mercury Optimax 2-Stroke Oil?

Our answer: Yes, we most certainly do. AMSOIL HP Marine Synthetic 2-Cycle Injector Oil is a world-class outboard 2-stroke engine oil. We contend that this product is an upgrade over the synthetic-blend Optimax 2-Cycle Oil from Mercury. We can offer this product at a price that is lower than Optimax oil in many cases.

Why Mercury Optimax Motors Require A Quality Injector Oil

Mercury Optimax engines are direct-injected motors that utilize fairly sophisticated technology. The hallmark of the Optimax system is the injection of atomized fuel-air mixture into the combustion chamber (rather than fuel only). The injected fuel droplets can be smaller than 5 microns at low-RPM.

Optimax motors also enhance efficiency by varying the fuel/oil ratio depending on RPM and load. At full throttle, the mix can be as rich as 44:1. At low RPM, the mix rate is as lean as 400:1. Therefore, not just any 2-cycle injector oil is up to the task.

Optimax engines also require an oil with a strong detergent content. Above all, prevention of engine deposits is paramount for maintaining proper performance and efficiency.

About AMSOIL HP Marine

AMSOIL HP Marine Synthetic 2-Stroke Injector Oil is a top-tier product designed for modern DFI 2-cycle outboard motors. The full-synthetic formula and robust additive ingredients provide maximum protection in direct-fuel-injected (DFI) motors. Modern 2-stroke motors like Mercury Optimax and Evinrude E-TEC can operate with ultra-lean mix ratios. HP Marine delivers maximum wear protection under these harsh operating conditions.

This product also provides powerful detergents, keeping engine internals and exhaust ports clean. HP Marine offers low aquatic toxicity along with minimal exhaust smoke and odor.

HP Marine is also backward compatible with older 2-cycle outboard motors.

Where to Buy AMSOIL HP Marine Synthetic 2-Stroke Oil?

Oildepot can offer HP Marine at wholesale prices in the US and Canada. Contact us for wholesale price list using the form on this page. If you have questions, feel free to call us at 1-800-748-5781.

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Cost Analysis: Mercury OptiMax 2-Cycle Oil vs. AMSOIL HP Marine

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AMSOIL HP Marine Synthetic 2-Stroke OilIf you’ve got a Mercury Marine OptiMax outboard engine and are looking at 2-stroke injector oil options. Let’s compare Mercury OptiMax/DFI 2-Cycle Oil with AMSOIL HP Marine Synthetic 2-Stroke Oil on both features and cost.

About Mercury OptiMax/DFI 2-Cycle Oil

OptiMax DFI 2-Stroke Oil is formulated for Mercury’s direct fuel-injected OptiMax series of 2-stroke outboard engines. The OptiMax Oil is a synthetic-blend injector oil formulated to minimize deposits and prevent wear in these high-output motors. It also contains additives to prevent rust and corrosion of internal engine parts.

About AMSOIL HP Marine Synthetic 2-Stroke Oil

HP Marine is AMSOIL’s premium 100% synthetic 2-stroke oil for direct fuel-injected outboard engines. HP Marine was formulated specially for the hostile operating conditions of DFI 2-stroke engines. This has been verified by exhaustive field testing. The full-synthetic formula reduces friction for maximum performance and fuel efficiency. The hallmark of HP Marine is clean, deposit-free operation for maximum performance and engine life. HP Marine also contains a powerful anti-rust and corrosion package for in-season and off-season protection.

Mercury OptiMax/DFI 2-Stroke Oil Why Is Mercury Optimax 2-Cycle Oil A Synthetic Blend?

Mercury has long been an advocate of using semi-synthetic blends for both their premium 2-stroke and 4-stroke engine oils. Is there a particular benefit to using synthetic-blend oils in Mercury Marine engines? The short answer is no. There is no mechanical, metallurgical or any other functional reason for synthetic-blends to be any sort of advantage in Mercury outboard engines. Mercury does not offer any sort of explanation for this reasoning.

It’s a safe to assume that Mercury uses synthetic-blends rather than full-synthetic oils because it keeps input costs down. As synthetic oils are irrefutably proven to be superior in high-performance 2-stroke marine, snowmobile and motorcycle applications, there is absolutely no other basis for Mercury to take this route. Lastly, Mercury’s literature offers that Optimax/DFI 2-Cycle Oil is graced with a “carefully modified base stock blend with a synthetic additive package”. There is absolutely no implication that this product is 50% synthetic.

Price of Mercury OptiMax/DFI 2-Cycle Oil In Canada And USA

Below is an average of suggested retail prices found at random Mercury Marine dealerships. Prices may vary in your region. Mercury OptiMax/DFI 2-Cycle Oil is sold in 4-litre and 10-litre containers in Canada and 1-US gallon (3.78L) and 2.5-US gallon (9.45L) jugs in the United States.

Canada (CAD$)

  • 4-litre jug- $60.78
  • 10-litre jug- $140.44

United States (USD$)

  • 1- US gallon jug- $43.85
  • 2.5 US gallon jug- $95.22

Price Of Mercury OptiMax/DFI 2-Cycle Oil Versus AMSOIL HP Marine

AMSOIL prohibits us from publishing their wholesale prices, but we can illustrate on a percentage basis how the price of AMSOIL HP Marine Synthetic 2-Stroke Oil compares to Mercury OptiMax/DFI 2-Cycle Oil. The AMSOIL HP Marine pricing data below is based on wholesale prices when purchasing a full case of 4X1 US gallons with average shipping charges included. Remote destinations may have extra shipping charges. HP Marine comes in US quart and US gallon formats and beyond that, they step up to kegs and drums.

Canada 

  • 4-litre jug- OptiMax/DFI 2-Cycle Oil costs 60% more than AMSOIL HP Marine
  • 10-litre jug- OptiMax/DFI 2-Cycle Oil costs 42% more than AMSOIL HP Marine

United States

  • 1- US gallon jug- OptiMax/DFI 2-Cycle Oil costs 50% more than AMSOIL HP Marine
  • 2.5-US gallon jug- OptiMax/DFI 2-Cycle Oil costs 40% more than AMSOIL HP Marine

Again, the AMSOIL prices in this comparison are based on wholesale prices when purchasing a full case of four gallons and include average shipping charges.

Conclusion

Consider that AMSOIL’s HP Marine 2-Stroke Injector Oil is a full synthetic formula that is designed to be safe and highly effective in the newest DFI 2-stroke engines. Yet it costs considerably less than the synthetic-blend Mercury OptiMax/DFI 2-Cycle Oil found at boat dealers. In our opinion, AMSOIL’s delivers legendary quality and is a great value at any price. The quality of OEM oils tends to be adequate, while the price tag tends to be anything but. Just because Mercury puts their name on the jug does not mean that it is the best oil for your engine.

Contact us for a wholesale price list using the form on this page or call us at 1-800-748-5781 and we’ll show you how easy and cost-effective it is to upgrade your Mercury OptiMax outboard engine to AMSOIL HP Marine Synthetic 2-Stroke Oil. We ship from warehouses in Canada and the United States.

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