Howes Diesel Treat Lubricity Test
Diesel fuel additives play an important role in keeping engines running smoothly, and one of the most well-known products in this category is Howes Diesel Treat. Drivers and fleet owners often rely on it to improve cold-weather performance, prevent gelling, and add lubricity to ultra-low sulfur diesel (ULSD). Because ULSD naturally has lower lubricating properties, conducting a lubricity test for Howes Diesel Treat can help determine how effective it is in protecting fuel system components like injectors and pumps from wear.
Understanding Diesel Fuel Lubricity
Lubricity refers to a fuel’s ability to reduce friction between moving metal surfaces in the engine’s fuel system. Without proper lubrication, components such as fuel pumps, injectors, and other precision parts can wear prematurely. Since the introduction of ULSD, lubricity has become a major concern for diesel engine owners because refining processes strip away natural lubricating compounds.
Importance of Lubricity Testing
Lubricity tests measure how well an additive can restore or enhance the lubricating properties of diesel fuel. These tests are often performed using standardized procedures such as the High-Frequency Reciprocating Rig (HFRR) test, which measures wear scar diameter on a metal surface after exposure to treated and untreated fuel. The smaller the wear scar, the better the lubricity.
Howes Diesel Treat Overview
Howes Diesel Treat is marketed as a year-round diesel conditioner. It is designed to prevent fuel gelling in cold temperatures, disperse water, and add lubricity back into low-sulfur diesel fuel. Many users appreciate that it is alcohol-free, meaning it does not dry out seals or cause corrosion. Its formula claims to improve injector life and optimize combustion efficiency.
Main Benefits
- Prevents diesel gelling in winter conditions
- Adds lubricity to protect injectors and pumps
- Removes water from the fuel system
- Improves fuel economy and power
- Keeps injectors clean for better performance
Understanding how well these benefits hold up under controlled testing is why many enthusiasts and professionals look for a lubricity test of Howes Diesel Treat.
Conducting a Lubricity Test
A typical lubricity test for Howes Diesel Treat involves treating a sample of ULSD fuel with the manufacturer’s recommended dose. The treated fuel is then subjected to an HFRR test. This test measures the wear scar diameter on a steel ball that oscillates against a steel plate under pressure while being lubricated by the fuel sample.
Step-by-Step Process
- Prepare a baseline test with untreated ULSD to measure natural lubricity.
- Treat a second sample with the correct dosage of Howes Diesel Treat.
- Run both samples through the HFRR test under identical conditions.
- Compare the wear scar diameter results from both tests.
A significant reduction in wear scar size indicates that Howes Diesel Treat successfully enhances lubricity.
Typical Test Results
Independent tests performed by enthusiasts and some labs often report improved lubricity when Howes Diesel Treat is used. For example, untreated ULSD may have a wear scar diameter near the maximum allowable limit of 520 microns, whereas treated fuel may show a reduction to 460 microns or lower. This demonstrates a clear benefit in protecting metal surfaces from wear.
Interpreting the Numbers
The smaller the wear scar number, the better the protection. A wear scar below 460 microns is generally considered excellent lubricity. Howes Diesel Treat often performs well enough to bring ULSD fuel into a safer range for long-term engine reliability.
Comparison with Other Additives
When evaluating Howes Diesel Treat in a lubricity test, many users compare it to other popular diesel additives on the market. Some competitors focus heavily on cetane improvement or cleaning ability, but may not offer the same level of lubricity protection. Howes is often considered a good all-around solution for both winter protection and fuel system lubrication.
Factors to Consider
- Cost per treated gallon – Howes is competitively priced for the protection it offers.
- Cold flow properties – crucial for winter driving conditions.
- Lubricity improvement – key for extending fuel system life.
- Ease of use – Howes comes with simple measuring directions for accurate dosing.
While some additives offer slightly better lubricity results in laboratory testing, Howes balances performance, price, and availability well for most users.
Field Observations
In addition to lab tests, real-world reports from drivers suggest smoother engine operation, quieter injectors, and improved fuel economy after regular use of Howes Diesel Treat. Fleet operators also appreciate that it helps prevent costly downtime during winter by keeping fuel flowing and lubricated.
Long-Term Benefits
Consistent use of a product that improves lubricity can extend the life of high-pressure fuel pumps and injectors. These components are expensive to replace, so investing in a fuel additive that passes a lubricity test can save money in the long run.
Best Practices for Using Howes Diesel Treat
To maximize its benefits, follow these best practices
- Always use the recommended dosage on the bottle for optimal performance.
- Treat fuel before extreme cold weather to prevent gelling issues.
- Use consistently, not just in winter, to keep injectors clean and lubricated year-round.
- Store the additive properly to maintain its effectiveness over time.
These habits will help ensure you get consistent results and maximum protection from the product.
A lubricity test of Howes Diesel Treat shows that it can significantly improve the lubricating properties of modern ULSD fuel. By reducing wear scar diameter and enhancing metal protection, it helps maintain the health of the engine’s fuel system. Combined with its anti-gel properties and water dispersal ability, it is a valuable year-round additive for diesel owners. For anyone concerned about injector and pump longevity, Howes Diesel Treat provides a practical and proven solution backed by both lab results and real-world performance.