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AMSOIL Series 2000 Octane Boost

AMSOIL Octane Boost

Improves the performance of all two-cycle and four-cycle gasoline-fueled engines. Just one treatment significantly increases engine response and power. AMSOIL Octane Boost reduces engine knock, improves ignition, helps fuel burn cleaner and inhibits corrosion. Recommended for all high performance off-road and racing applications. Increases octane number by up to 7 points.

Product Code: AOB

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Performance Features

  • Improves performance
  • Maximizes power
  • Improves ignition
  • Helps fuel burn cleaner
  • Removes carbon deposits
  • Reduces engine knock
  • Improves responsiveness
  • Inhibits corrosion
We used the Octane Boost in conjunction with 93-octane pump gasoline. Compared to standard pump gas, the Octane Boost enriched gasoline allowed us to get a better drive out of a comer and increase top speed in a straightaway. Our motorcycle engines ran cleaner, as noticed by other competitors. We only had to change spark plugs once this year, as compared to two or three times in past years due to carbon buildup.

Canaan M. Manley
Owner of Backdraft Motorsports

A New Use for an Old Favorite – AMSOIL Series 2000 Octane Boost Doubles as a Lead Substitute
AMSOIL Series 2000 Octane Boost has long been the product of choice for those who are looking to improve the performance of two-cycle and four-cycle gasoline-fueled engines. And now there is another great reason to install it in older gasoline-fueled automobiles. AMSOIL Octane Boost has just been approved for use in those engines requiring a leaded fuel or a lead substitute.

When Tetraethyl lead (TEL) was eliminated as a motor fuel additive in the United States, the need to replace some of its performance features, especially to protect older vehicles, was hotly debated in the oil and auto industries. Prior to the elimination of TEL in January 2000, a test protocol was developed by the Federation of British Historic Vehicle Clubs (FBHVC) to evaluate the effectiveness of lead substitutes in protecting older vehicles against valve seat recession (VSR). The test protocol was developed for the United Kingdom because the population of older vehicles with “soft” valve seats is much greater there than in the United States. Driving speeds, which tend to be higher in the U.K., were also a reason the protocol was developed.

When the temperature within an engine increases as a result of high speeds or loads, a phenomenon known as “micro-welding” can occur. This condition is especially prevalent in older engines.

VSR occurs when two surfaces (for example: the exhaust valve seat and the valve head) make contact and the temperatures of the surfaces are significantly elevated. Eventually, the metal surfaces will micro-weld together. When the mechanical action of the camshaft separates the two metal surfaces, the softer metal (the valve seat in this example) is eroded. The ultimate result is a loss of cylinder compression and eventual engine failure.

Tetraethyl lead effectively prevented valve seat recession because the lead oxide that formed during the compression process served as a high temperature lubricant, preventing the potential destructive metal-to-metal contact between the valve and its seat. More recently, octane booster MMT has been found to play a similar role. AMSOIL has used this technology in this area to provide formulations capable of protecting older vehicles against valve seat recession. Using AMSOIL Octane Boost at its current recommended treatment mixture will not only raise the fuel’s octane value, but will also provide the lead substitute benefits.

What type of vehicles will benefit from having a lead substitute added to the fuel mixture? Older car and truck engines, especially those used as collector automobiles, may require a lead substitute to prevent valve seat recession. In addition, there are many models of older off-road equipment such as dump trucks, tractors and tow vehicles that will benefit from a lead substitute.

Older four cycle marine engines found on many large pleasure craft boats will also benefit from this added protection. For example, older Chris Craft boats are prime candidates for an AMSOIL Octane Boost treatment. These types of boats are typically in service for many years, due to the low amount of miles and hours of usage accumulated per year and the high value of the overall unit.

Older models of motor homes are also pleasure vehicles that may see low mileage usage for only part of each year. The high replacement cost of these units and their parts are another great incentive to try AMSOIL Octane Boost for its lead substitute benefits.


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