Katerina Swanson
TOP TIER™ Diesel Fuel is a high-quality fuel performance standard developed by leading automotive and heavy-duty equipment manufacturers. It was created in 2017 to promote better fuel quality, maintain fuel economy, reduce maintenance costs, and reduce vehicle downtime. TOP TIER™ Diesel Fuel is sponsored by General Motors, Volkswagen, Daimler Truck, Navistar, and Ford, and is recommended for both heavy and light-duty vehicles. The TOP TIER™ Diesel Fuel Performance Standard requires additive packages to reduce deposits on internal and external injectors, improve lubricity to decrease wear on pumps and injectors, improve fuel stability, and reduce particulate and water contamination.
| Characteristics | Values |
|---|---|
| Sponsoring Companies | General Motors, Volkswagen, Daimler Truck, Navistar, Ford, Detroit Diesel |
| Purpose | Promote better fuel quality, maintain fuel economy, reduce maintenance costs, reduce vehicle downtime |
| Performance Standard | To be used with regional specifications or regulations |
| Requirements | Additive packages, good housekeeping practices |
| Additive Packages Requirements | Reduce deposits on injectors, improve lubricity, improve fuel stability, reduce water and particulate contamination |
| Good Housekeeping Practices Requirements | Protection against water and particulates in fuel storage and dispensing equipment, TOP TIER-approved water detection process |
| Cetane Rating | Above 40 |
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What You'll Learn
- TOP TIER™ Diesel Fuel is a high-quality performance specification
- It is sponsored by leading automotive manufacturers
- It reduces deposits on injectors and other fuel system components
- It improves lubricity, decreasing wear on injectors and engine components
- It improves fuel stability and reduces water contamination
TOP TIER™ Diesel Fuel is a high-quality performance specification
The TOP TIER™ Diesel Fuel Performance Standard requires additive packages to improve lubricity, reduce deposits on internal and external injectors, improve fuel stability, and protect against water and particulate contamination. These requirements are in addition to the ASTM D975 and D7467 specifications for diesel and biodiesel blended fuel in the U.S.
The goal of TOP TIER™ is to improve fuel quality to maintain fuel economy, reduce maintenance costs, and decrease vehicle downtime. This is especially important for today's diesel engines, which utilize high-pressure common rail (HPCR) fuel injection systems that require cleaner combustion and higher operating pressures.
TOP TIER™ is sponsored and overseen by major automotive companies such as General Motors, Volkswagen, Daimler Truck, and Ford, and it is recommended for both heavy and light-duty vehicles. The TOP TIER™ logo is displayed at fueling stations selling TOP TIER™ Licensed Brands, indicating that the fuel meets the performance requirements set by engine manufacturers.
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It is sponsored by leading automotive manufacturers
TOP TIER™ Diesel Fuel is recognised as a high-quality fuel performance standard developed by leading automotive and heavy-duty equipment manufacturers. It was created to promote better fuel quality, maintain fuel economy, reduce maintenance costs, and reduce vehicle downtime. TOP TIER™ Diesel Fuel is currently sponsored and overseen by leading automotive manufacturers, including General Motors, Volkswagen, Daimler Truck, Navistar, and Ford. These companies are at the forefront of the automotive industry and are committed to ensuring that their vehicles perform at the highest level with the use of high-quality fuel.
The TOP TIER™ Diesel Fuel Performance Standard requires additive packages that reduce deposits on internal and external injectors and other fuel system components. This results in improved lubricity, decreasing wear and tear on injectors and engine components. Additionally, the standard improves fuel stability and reduces particulate and water contamination. Water is the most common type of contamination in diesel fuel, and it can lead to corrosion, increased metal wear, and microbial growth. TOP TIER™ Diesel Fuel suppliers take stringent measures to protect against water contamination in their fuel storage and dispensing equipment.
The development of today's diesel engines, which utilise high-pressure common rail (HPCR) fuel injection systems, has driven the need for improved fuel quality. HPCR systems better regulate fuel pressure and injection timing, resulting in cleaner combustion. This technology has also led to the implementation of catalyst emissions control devices such as Diesel Oxidation Catalyst (DOC) and Diesel Particulate Filter (DPF) systems. These advancements have resulted in higher operating pressures and tighter tolerances for moving parts in fuel pumps and injectors, further emphasising the importance of high-quality fuel.
The TOP TIER™ program is recommended for both heavy and light-duty vehicles and is designed to be used in conjunction with regional specifications and regulations. Retailers voluntarily join the TOP TIER™ licensing program to supply a higher standard of fuel that meets the stringent requirements set by the sponsoring automotive manufacturers. This ensures that drivers and end-users benefit from optimised engine performance and a more positive overall experience. The TOP TIER™ logo serves as a trusted indication of fuel quality and is displayed at licensed fuel stations.
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It reduces deposits on injectors and other fuel system components
TOP TIER™ Diesel Fuel is a performance specification developed by leading automotive and heavy-duty equipment manufacturers. It is currently sponsored and overseen by General Motors, Volkswagen, Daimler Truck, Navistar, and Ford, and is recommended for both heavy and light-duty vehicles.
The TOP TIER™ Diesel Fuel Performance Standard requires additive packages to reduce deposits on internal and external injectors and other fuel system components. This is important because deposits that form in engines and fuel delivery systems can cause performance issues such as reduced fuel economy, increased emissions, and drivability problems like hard starting, hesitation, and stalling.
The additive packages in TOP TIER™ Diesel Fuel contain detergents that help break down carbon in the injectors and engines. These detergents improve fuel stability and reduce deposits in the fuel system components. This, in turn, helps to maintain fuel economy and reduce maintenance costs and vehicle downtime.
The TOP TIER™ Diesel Performance Standard also requires good housekeeping practices to reduce deposits on injectors and fuel system components. This includes measures to protect against water in fuel storage and dispensing equipment, as water is the most common type of contamination in diesel fuel. If water is introduced into the vehicle fuel system, it can lead to corrosion, increased metal wear, ice during cold weather, plugged filters or screens, increased fuel degradation, and microbial growth.
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$105.99
It improves lubricity, decreasing wear on injectors and engine components
TOP TIER™ Diesel Fuel is a performance standard that was created in 2017 to promote better fuel quality, and it is currently sponsored and overseen by General Motors, Volkswagen, Daimler Truck, Navistar, and Ford. It is recommended for both heavy- and light-duty vehicles.
One of the key benefits of TOP TIER™ Diesel Fuel is its ability to improve lubricity, which helps to decrease wear and tear on injectors and other engine components. Diesel engines typically utilize high-pressure common rail (HPCR) fuel injection systems, which result in higher operating pressures and tighter tolerances for moving parts in fuel pumps and injectors. This, in turn, drives the need for improved fuel quality.
The process of removing sulfur during the refining process to meet environmental regulations has resulted in modern diesel fuel having less natural lubricity. This is because the refining process also removes the natural lubricating compounds within diesel fuel. Ultra-low sulfur diesel (ULSD) has 97% less sulfur compared to traditional diesel fuel, and the loss of these organic compounds leads to increased friction and wear in engine components.
TOP TIER™ Diesel Fuel addresses this issue by requiring additive packages that improve lubricity and decrease wear on injectors and engine components. These additives, such as fatty acid methyl esters derived from biofuels, form a protective layer on metal surfaces, reducing friction and protecting against metal-to-metal contact. This, in turn, helps to extend the lifespan of engine components and reduce maintenance costs.
By using TOP TIER™ Diesel Fuel, vehicle owners can improve the lubricity of their diesel fuel, reducing the friction and wear on injectors and other engine components. This not only helps to maintain optimal engine performance but also leads to reduced maintenance costs and improved fuel efficiency.
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It improves fuel stability and reduces water contamination
TOP TIER™ Diesel Fuel is a performance standard that was created to promote better fuel quality, maintain fuel economy, reduce maintenance costs, and reduce vehicle downtime. It is to be used in tandem with regional specifications or regulations.
The TOP TIER™ Diesel Fuel Performance Standard requires additive packages to improve fuel stability and reduce water contamination, among other things. Today's diesel engines utilize high-pressure common rail (HPCR) fuel injection systems that better regulate fuel pressure and injection timing for cleaner combustion. This technology also allows for the implementation of catalyst emissions control devices. These advancements have resulted in higher operating pressures and tighter tolerances for moving parts in fuel pumps and injectors, driving the need for improved fuel quality.
Oxidation can cause fuel to take on increased water, leading to fuel filter plugging and peroxide/acid/gum formation, breaking down elastomeric seals, or causing deposits/corrosion damage. TOP TIER™ Diesel Fuel specifies higher oxidation stability than ASTM requirements for biodiesel fuels. Water is the most common type of contamination in diesel fuel, and if it enters the vehicle fuel system, it can lead to corrosion, increased metal wear, ice during cold weather, plugged filters or screens, increased fuel degradation, and microbial growth.
TOP TIER™ Diesel Fuel suppliers take measures to protect against water in their fuel storage and dispensing equipment and must have a TOP TIER-approved water detection process in place. Additionally, TOP TIER Diesel Fuel marketers must have filters on their dispensing equipment as the last point of protection against contaminants entering the vehicle fuel system, regardless of the source of the contaminant.
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Frequently asked questions
TOP TIER™ Diesel Fuel is a high-quality fuel performance standard developed by leading automotive and heavy-duty equipment manufacturers.
TOP TIER™ Diesel Fuel provides benefits such as improved fuel quality, better engine performance, and reduced maintenance costs.
TOP TIER™ Diesel Fuel contains additives that help reduce deposits on injectors and fuel system components, improve lubricity, and decrease wear on injectors and engine components.
TOP TIER™ Diesel Fuel is currently sponsored and overseen by General Motors, Volkswagen, Daimler Truck, Navistar, Detroit Diesel, International, and Ford.
Look for the TOP TIER™ logo at the fuel station. Many fueling stations selling TOP TIER™ Licensed Brands display the logo on the pump, pump handle, canopy, or in a station window.
