US2 Manufacture Recommended Oil

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US Motor Power

US2 - 2 Cycle Oil

eliminate multiple oil/fuel mix ratios

US2 - 2 Cycle Oil

For some time now, United States Motor Power has had numerous conversations with their customers about the smoke exhaust from our engines and the black oily discharge which drips out the exhaust pipe… and what can be done about it…and what needed to be done about it…!

The smoke and discharge are the result of old lubrication technology,  a rich 24:1 mixture of oil to gas ratio, which equates to 5.33 ounces of oil that does not burn up completely resulting in thick smoke and residuals purging through the exhaust system. In the past a reduction of oil was risky and not recommended.  Not any more! 

US Motor Power is pleased to announce we will be supplying a 2-cycle engine lubricant that will be recommended to all its customers and their subsequent consumers.  We have concluded months of testing on various engine applications and experienced excellent results.  It seemed the more we tried to burn up our engines the better the results…. this 2-cycle oil (US2 Motor Oil), is the very best high performance formula that we have ever used and exceeds the highest worldwide performance standard E-GD+.... an outstanding 70:1 mixture ratio of 1.8 ounces of oil to fuel, it’s petroleum based, great for break-in running as well as another revenue stream for distributors.

2-Cycle Oil Gallon Mix Pouch and Pre-Measure Bottle

  • Easily understood mixing for all
  • Easy-measure, no-leak pouches
  • Add 1 pouch to 1 US gallon, Imperial gallon or 4 liters of fuel
  • Larger 20-gallon mix bottle squeeze/measure
  • Environmentally friendly (less exhaust)
  • Increased and improved performance and engine life
  • One mix for ALL 2-cycle engines
  • One mix for all ratios
  • Smoke free operation
  • Contains fuel stabilizer
  • Reduced engine break-in period
  • Resist combustion chamber deposit-induced pre-ignition
  • Prevent ring sticking
  • Inhibit deposit formation
  • Reduce scuffing
  • Resist spark plug fouling

A specialized two-cycle, single mix ratio lubricant engineered for use in all two-cycle engines, regardless of brand, model, or mix ratio is rated ISO-E-GD+, the highest rating available in the stringent International Standards Organization global performance ratings system. This oil meets and exceeds all equipment manufacturers rating requirements. The US2, 2 Cycle Motor Oil delivers all these features while being the most environmentally friendly two-cycle mix oil available. The smoke reduction, and gasohol compatibility contribute to cleaner air; while up to 60% less oil is required, which helps conserve precious non-renewable resources.


Surface Improving Eutectic additives contained in US2 Oil products work to reduce friction, heat and wear associated with the severe demands placed on today's power equipment, improving performance and extending engine life.

The following explains the fundamentals of lubrication along with the three generations of oils. US2 Oil's Surface Improving Eutectic additive is explained as the third generation of oil.


Although a lubricant must perform many functions, its most important job is to protect working components by reducing friction. All machined metal surfaces have a surprising amount of surface roughness (pictured right). The fundamental purpose of lubrication is to separate metal surfaces. The microscopic peaks and valleys in all finished components make surface separation more difficult. An oil layer with a thickness of at least twice the height of the tallest peak must be maintained in order to eliminate metal-to-metal contact. If complete surface separation is achieved, the resulting condition is called hydrodynamic lubrication. Hydrodynamic lubrication is not difficult to achieve provided a constant speed with no load is maintained. Unfortunately, rarely does power equipment run at a constant speed with no load. Under a loaded condition the surfaces can be forced together resulting in metal-to-metal contact, and of course, wear.


To assist in the formation and maintenance of hydrodynamic conditions, additives are used in lubricant formulation to smooth out surface roughness. All current oil formulations include some method of accelerating surface improvement. Separating oils by their built-in surface improvement process yields 3 oil classifications or "generations", as they are commonly called.

1st Generation
These lubricants utilize an abrasive wear concept that allows for surface clashing and smoothening through a sacrificial process of removing surface material. In many conventional lubricant applications, E.P. (extreme pressure) additives are used to promote the abrasion process through chemical reaction. These conventional oils have been in wide use since the 1920's. Conventional oils with EP-additives form metallic salt layers at the mating surfaces through chemical reaction, which prevent seizing of the surfaces. The built-up film is constantly renewed, but causes continuous wear. The surfaces slowly etch away at each other until a smoother, yet somewhat crude surface results. This is a sacrificial process that results in small metal particles being removed from the component and can contaminate the oil film.


2nd Generation
In the late 1940's, solid additives were first introduced to many specialty oil applications. These solid additives such as graphite, molybdenum (pictured right), silicone, Teflon, etc., work under the concept of coating the contact surfaces to protect against surface clashing. Lubricants containing solid particles form under pressure a protective layer with a low friction value. In this case material is not removed, rather deposited. Solid additives are deposited in the valleys to create a smoother surface. They are designed to protect against metal contact by coming between two peaks at the moment of contact. The peak will deform, rather than weld and break. The solid additive flake will shear, allowing the two deformed peaks to pass by each other with limited damage. Solid additives provide smoother surface area through a less sacrificial process. However, particle size and concentration makes it statistically impossible for an additive flake to be present each time two peaks come together. Some abrasive wear does occur.

3rd Generation
In the 1970's, a 3rd generation of oil technology was developed and further enhanced in the late 1980's. This technology utilizes a eutectic reaction that restructures contact points without removing or adding material. When metal-to-metal contact occurs, extremely high but localized temperatures cause a reaction between the additives and the mother material. Although highlighted here, these localized temperatures occur with all oil technologies, but only eutectic additives utilize these conditions to restructure the metal surface. The metal peaks become soft and are deformed by the pressure. Repeated deformation restructures the surfaces to their optimum smoothness until no peaks are clashing. Additives then become dormant from lack of the localized high temperatures, returning the metal to its original density.


Comparison of surface improvement results:

Photographic enlargements quickly illustrate the results of the three generations of lubricants. These photos show magnified views of contact surfaces before and after break-in. Each was using the specified lubricant, all running under identical load, ambient temperature, time period, speed, etc.

This picture shows a newly finished metal surface prior to break-in. To the naked eye, this surface would appear like glass; however, through magnification we can see it is actually covered with microscopic peaks and valleys.


Conventional Lubrication
This picture shows a cylinder surface after break-in with 1st generation lubricant. The first oils simply formed a liquid cushion between moving parts and allowed microscopic surface roughness to slowly smooth through abrasion. Later, chemicals were added which formed metallic salt layers on the sliding surfaces to slowly wear away surface irregularities.


Solid Lubrication
This picture shows a cylinder surface after break-in with solid lubricant. The second generation oil development was a lubricating medium containing graphite, molybdenum, Teflon or other solid additives that formed a protective layer under pressure and filled in microscopic pits and valleys to form a smooth sliding surface. Instead of wearing away metal, they built up on the metal surface.


Performance Activated Lubrication- US2 Motor Oil
This process involves neither abrasion nor build-up. It produces an action that causes the metal surfaces to restructure. The metal deforms and rapidly produces super-smooth, hardened, sliding surfaces. The harder the engine is run, the more effective the lubricant becomes.