Mercedes Mullins
Diesel fuel quality is a highly debated topic, with various factors influencing the performance and longevity of diesel engines. While some argue that the best diesel is simply fresh diesel, purchased from stations with high sales volume and modern storage tanks, others advocate for specific brands known for their fuel quality, such as Shell, BP, Exxon/Mobile, Sunoco, and Costco. Additionally, TOP TIER™ Approved Diesel, sponsored by leading automotive manufacturers, promotes improved fuel quality and performance standards to maintain fuel economy and reduce maintenance costs. Ultimately, the best diesel fuel may depend on regional availability, personal preferences, and engine specifications.
| Characteristics | Values |
|---|---|
| TOP TIER™ Approved Diesel | Created to promote better fuel quality, reduce maintenance costs, and reduce vehicle downtime. |
| TOP TIER™ Diesel Performance Standard | Requires additive packages to reduce deposits and improve lubricity, fuel stability, and protection against water and particulates. |
| ASTM D975 and D7467 specifications | TOP TIER™ Diesel also meets these specifications for diesel and biodiesel blended fuel in the U.S. |
| High-quality diesel brands | Exxon/Mobile, Sunoco, BP, Shell, Cenex, Chevron, Holiday, Petro-Canada, Irving, Costco, Arco, QuikTrip, Neste |
| High sales volume | Look for stations with high diesel traffic, as diesel can collect water over time. |
| Fresh diesel | Diesel should be used within 6 months, so choose stations with high turnover. |
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What You'll Learn
TOP TIER™ Approved Diesel
The program was created to promote better fuel quality, which helps to maintain fuel economy, reduce maintenance costs, and reduce vehicle downtime. TOP TIER™ Diesel Fuel Performance Standard requires additive packages to reduce internal and external injector deposits, improve lubricity to decrease wear and tear on pumps and injectors, improve fuel stability, and reduce particulate and water contamination.
Today's diesel engines typically utilize high-pressure common rail (HPCR) fuel injection systems, which better regulate fuel pressure and injection timing for cleaner combustion. This technology also allows for the implementation of catalyst emissions control devices, such as Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF) systems, and Selective Catalytic Reduction (SCR).
To ensure that you are purchasing TOP TIER™ Approved Diesel, you can consult the TOP TIER™ Station Finder or look for the TOP TIER™ Approved Diesel sticker on the pumps. Additionally, it is recommended to buy diesel from stations with high sales volume, as diesel can collect water over time, which can lead to fuel system issues.
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Premium diesel
Some specific examples of premium diesel fuels include Cenex Roadmaster XL, BP Amoco grade premium diesel, and Cenex Ruby Fieldmaster premium diesel fuel. Cenex, in particular, is known for its extensive research and testing to ensure the highest quality premium diesel fuel on the market, and they offer a warranty on their diesel fuel.
When it comes to purchasing diesel fuel, some people believe that the brand of diesel is irrelevant, and that the most important factors are the cleanliness and maintenance of the station, as well as the sales volume, as diesel can collect water over time. However, others argue that certain brands of diesel fuel, such as TOP TIER™ Approved Diesel, can provide benefits such as improved fuel quality, reduced maintenance costs, and reduced vehicle downtime.
Ultimately, the decision of which diesel fuel to purchase depends on various factors, including the availability of specific brands in a particular region, the recommendations of vehicle manufacturers, and personal preferences. Some people may choose to add their own additives to improve the quality of the diesel fuel, while others may prioritize purchasing from stations with high sales volumes to ensure the fuel is fresh and less likely to have water contamination.
In conclusion, while there may be debates about the best diesel fuel to use, premium diesel fuels with additional additives can offer potential benefits in terms of engine performance, fuel economy, and reducing wear and tear on engine components.
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Cleanliness of fuel
The cleanliness of diesel fuel is an important consideration when determining the best diesel fuel. Clean diesel fuel helps to ensure optimal engine performance and reduces maintenance costs.
One way to ensure diesel fuel cleanliness is to purchase fuel from stations with high sales volume. This helps to prevent the fuel from sitting untreated for extended periods, which can lead to fuel degradation and contamination. Water is a common source of fuel contamination, which can lead to microbial growth, corrosion, and degradation of the fuel. To avoid water contamination, it is recommended to buy diesel from stations with high diesel turnover and to avoid filling up when a tanker is unloading fuel, as this can stir up dirt and crud from the bottom of the tank.
Another way to ensure diesel fuel cleanliness is to look for TOP TIER™ Approved Diesel. This fuel is designed to meet specific performance standards, including reducing internal and external injector deposits, improving lubricity, and reducing water contamination. TOP TIER™ Diesel utilizes high-pressure common rail (HPCR) fuel injection systems, which better regulate fuel pressure and injection timing for cleaner combustion. These systems also allow for the implementation of emissions control devices, such as Diesel Oxidation Catalyst (DOC) and Diesel Particulate Filter (DPF) systems, which further enhance fuel cleanliness and reduce emissions.
In addition to purchasing clean diesel fuel, it is also important to maintain the fuel in storage tanks properly. This includes regular testing, maintenance, and remediation if the fuel does not meet cleanliness standards. Mobile fuel polishing systems can be used to maintain fuel cleanliness in multiple tanks, although they must be hauled out on a scheduled basis to ensure the fuel remains within the desired specifications.
Finally, the addition of fuel additives can also improve diesel fuel cleanliness. Additives can help to reduce injector deposits, improve lubricity, and enhance fuel stability. Some common additives include Power Service and Hot Shot Secret, which users have reported improving diesel quality and engine performance.
Overall, ensuring diesel fuel cleanliness is crucial for maintaining engine performance and reducing maintenance costs. By purchasing fuel from clean, well-maintained stations with high sales volume, looking for TOP TIER™ Approved Diesel, properly maintaining storage tanks, and using fuel additives, individuals can help ensure they are using the best diesel fuel available.
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Fuel freshness
When it comes to diesel fuel, freshness is a key factor in determining its quality. Diesel has a recommended usage period of six months, and the fresher the fuel, the lower the chances of water contamination. Water in diesel can lead to fuel system issues, such as algae growth in the tank, CP4 failures, and injector problems. Thus, it is advisable to buy diesel from stations with high fuel turnover, as this ensures that the fuel is fresh and less likely to cause issues.
To find fresh diesel, look for stations with a high volume of diesel sales and a quick replenishment rate. Truck stops and stations frequented by trucks and RVs are good options, as they have a high diesel turnover. Additionally, modern fiberglass storage tanks at stations can help maintain fuel freshness by reducing the chances of water and crud buildup.
Some well-known diesel brands, such as Shell, BP, and Exxon/Mobile, are often associated with quality. However, it's important to remember that diesel fuel branding may not always reflect the true source of the fuel. Many stations obtain their fuel from common distributors, and the branding company's additive is added during loading, creating the "branded" product.
To ensure the best diesel fuel, it is recommended to look beyond branding and focus on stations with high diesel traffic and turnover. This will help maintain fuel freshness and reduce the chances of water contamination, which is a significant factor in diesel fuel quality.
Additionally, some diesel users opt for premium-grade diesel, which often contains higher levels of cetane and additional "maintenance" additives. However, the effectiveness of these additives is a matter of debate, and some users prefer to add their own trusted additives to their fuel, regardless of the brand. Ultimately, the consensus is that fresh diesel from a high-traffic station is the best option to ensure both quality and the proper functioning of your vehicle.
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Fuel additives
When it comes to diesel fuel, there are various factors that determine its quality. These include the cleanliness of the fuel, the maintenance of the storage tanks and pumps, and the sales volume of the station.
One way to ensure fuel quality is to purchase from stations with high sales volume, as this reduces the risk of water collecting in the diesel and causing fuel system issues. TOP TIER™ Approved Diesel is another option, as it promotes better fuel quality and reduces maintenance costs. However, not all stations of the same brand carry TOP TIER™ diesel, so it's important to look for the TOP TIER™ sticker on the pumps.
In addition to choosing high-quality diesel fuel, some people also use fuel additives to improve their engine's performance and protect their fuel systems. Fuel additives can provide benefits such as:
- Increased lubricity, which reduces wear on pumps, injectors, and engine components.
- Improved fuel stability, preventing the fuel from breaking down over time.
- Reduced deposits and contaminants, keeping injectors and fuel systems clean and preventing power loss and maintenance issues.
- Better fuel economy and reduced emissions through more complete combustion.
There are a variety of fuel additives available on the market, and the best one for your needs may depend on factors such as the type of engine, the climate, and personal preferences. Here are some popular options:
- Hot Shots: This additive is known for its convenience and effectiveness in improving lubricity and fuel economy. It comes in an easy-to-use squeeze bottle and has shown an improvement of 2-3 mpg in some cases.
- Optilube: This additive has consistently performed well in tests, and some users prefer its Summer Formula or XPD variant. It is, however, more expensive than other options.
- Howes: A popular choice among diesel vehicle owners, with some claiming to have never had any issues with their injectors or pumps. It is also available in a convenient squeeze bottle.
- Stanadyne: Users appreciate its ease of use, and it is suitable for older engines as well. It is claimed to improve fuel lubricity.
- Archoil: This brand offers a fuel system cleaner as well as a fuel additive. Their products aim to improve fuel economy and reduce emissions.
- Power Service: This additive is mentioned as an option to improve the quality of diesel fuel.
When using fuel additives, it is important to follow the recommended dosage and be cautious about mixing different additives, as it may be detrimental to certain engines. Additionally, while additives can provide benefits, it is worth noting that some engines may run just fine without them, as long as the fuel is kept clean and fresh.
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Frequently asked questions
TOP TIER™ diesel is approved by leading automotive manufacturers, including General Motors, Volkswagen, Daimler Truck, and Ford. It is designed to improve fuel quality, maintain fuel economy, reduce maintenance costs, and minimise vehicle downtime.
The quality of diesel fuel is influenced by its freshness and the maintenance standards of the station. Diesel should ideally be used within six months, and it is recommended to purchase fuel from stations with high sales volume to ensure fuel turnover and reduce the risk of water contamination.
While preferences vary, some companies mentioned across forums include BP, Shell, Chevron, Cenex, and Costco. However, it is worth noting that diesel fuel branding may not always be indicative of the actual product, as manufacturers often utilise common pipeline systems for distribution.
