Product Overview
Hot Shot’s Secret Everyday Diesel Treatment (EDT), produced by Lubrication Specialties Inc., is a multi-functional diesel fuel additive designed for consistent, everyday use across all diesel-powered vehicles. Its primary function is to address common deficiencies in modern Ultra-Low Sulfur Diesel (ULSD) fuel, including low lubricity, insufficient cetane, and susceptibility to injector and fuel system deposits. The manufacturer claims that EDT boosts cetane by up to seven points, improves fuel economy by up to 7.3%, and increases fuel lubricity by 26%—all while helping keep diesel particulate filters (DPF) cleaner and reducing engine and injector noise. EDT targets a wide spectrum of diesel applications, from light-duty pickups like the Ford Powerstroke and GM Duramax to heavy-duty trucks, off-road equipment, and even agricultural machinery. The product is recommended for use at every fuel fill-up, making it well-suited for daily drivers and fleet vehicles. With a price range typically in the mid-tier bracket, EDT offers a cost-effective approach to long-term engine maintenance and diesel performance enhancements, aimed at drivers seeking improved reliability, smoother operation, and fuel cost savings.
Detailed Assessment
Functionality & Benefits
Rating: 4.5/5 – Hot Shot’s Secret EDT delivers a robust array of benefits, chief among them increased cetane for smoother combustion, improved lubricity that protects the injection system, and a cleaner running engine. Real-world testing reports notably quieter running, less injector clatter, and a measurable increase in fuel efficiency—up to 7.3% according to the manufacturer, and independent reviews cite gains of 1.3–3.5 mpg depending on vehicle and usage. It also helps in cold starts and supports emissions equipment longevity by keeping fuel systems cleaner.
Technology & Innovation
Rating: 4/5 – EDT’s 6-in-1 formula addresses multiple fuel issues with one application, blending cetane improvers, lubricity agents (including their proprietary LX4), detergents, rust inhibitors, and demulsifiers. While these ingredients are common in quality diesel additives, EDT’s blend is engineered for daily use, setting it apart from harsher, infrequently applied cleaners. The product’s compliance with ULSD regulations and its claim of being “completely ashless” ensures no risk to expensive emissions systems.
Ease of Use
Rating: 5/5 – EDT is among the easiest additives to apply: the recommended “premium dose” is 1 oz. per 25 gallons, with a squeeze bottle making accurate dosing straightforward. Its design as an everyday additive means it fits seamlessly into regular fueling routines, eliminating guesswork or special schedules. The product’s flexibility also allows for higher “performance doses” when desired.
Market Popularity
Rating: 4/5 – Presence in both enthusiast and commercial sectors is strong, as reflected by widespread online retailer listings, consistent discussion in diesel forums, and long-term repeat users. While it may not have universal name recognition like some legacy brands, Hot Shot’s Secret occupies a respected niche among serious diesel owners and is making steady gains in both consumer and shop adoption.
Customer Satisfaction
Rating: 4/5 – Verified customer feedback is largely positive, with many citing smoother engine operation, improved mileage, and a reduction in DEF (diesel exhaust fluid) usage. A minority have reported no noticeable improvement or, in rare cases, increased injector noise or minor mileage fluctuations. The overall trend, however, favors high satisfaction and repeat purchases.
Competitive Comparison
Rating: 4/5 – Compared to top competitors like Power Service Diesel Kleen and Stanadyne Performance Formula, EDT offers a broader spectrum of benefits (notably lubricity and cetane boost in a single application). While some competitors may deliver slightly stronger detergent action or anti-gel properties in cold climates, EDT stands out as a superior all-rounder for daily preventive maintenance. Unlike some offerings, it does not require periodic deep cleaning, though the manufacturer recommends pairing with Diesel Extreme twice a year for comprehensive system cleaning.
Performance Results
Rating: 4.5/5 – Independent testing and user reports confirm tangible results: engines run more quietly, injectors are protected, and meaningful fuel economy gains (up to 2–3.5 mpg) have been observed after several tanks. Some users experience improved throttle response and smoother acceleration, while others report a reduction in DPF regen frequency, suggesting cleaner combustion and fewer emissions-related issues.
Value for Money
Rating: 4.5/5 – In the context of mid-range pricing, EDT provides excellent value. The long treatment life (up to 400 gallons per 16 oz. bottle at the standard dose) means each application is relatively inexpensive, especially set against the potential for fuel savings, decreased maintenance, and longer injector life. Its effectiveness and ease of use justify its premium over basic, single-function additives.
Verdict
Hot Shot’s Secret Everyday Diesel Treatment excels as a comprehensive, preventative fuel additive for diesel owners seeking tangible improvements in engine performance, longevity, and efficiency. Its strongest points lie in its multi-functionality—delivering reliable cetane improvement, significant lubricity gains, and consistent cleaning benefits with every tank. Users most often report smoother, quieter running engines, measurable increases in fuel economy, and peace of mind regarding injector and fuel system preservation. While it may not perform as aggressively as dedicated deep-cleaners (and should be paired with Hot Shot’s Diesel Extreme for periodic deep cleaning), EDT’s “every fill-up” approach provides substantial cumulative value. Its straightforward application and compatibility with all diesel engines make it an excellent fit for light-duty trucks, over-the-road haulers, agricultural equipment, and fleet vehicles. Minor drawbacks include occasional isolated reports of negligible effects or inconsistent results in older or high-mileage engines, but these are not the norm. Overall, Hot Shot’s Secret Everyday Diesel Treatment earns a strong recommendation for those invested in proactive diesel maintenance and cost-effective performance gains.
Final Rating: 4.5/5
