Ferox

What Ferox does

Ferox (legal entity: Rennsli Corp) is a privately held, direct-to-consumer e-commerce company headquartered in Orem, Utah that manufactures and distributes a patented, EPA-registered solid fuel catalyst tablet. The tablets are designed to dissolve in fuel and support more complete combustion across gasoline, diesel, propane, and LPG applications, with the company positioning its technology as acting during the combustion event itself rather than as a post-deposit cleaning additive. The product is sold in three color-coded SKUs differentiated by treatment capacity (Ferox Red for tanks up to 8 gallons, Ferox Blue for up to 20 gallons, Ferox Green for up to 50 gallons), plus a Sample Pack targeted at first-time buyers; all variants use the same catalyst chemistry and are cross-fuel compatible. A subscription billing option with 20–30% discounts against one-time pricing and a two-tank money-back guarantee are used as conversion levers.

Ferox's go-to-market is product-led and self-serve through its own website (feroxtabs.com), supported by an active social media presence on Facebook, Instagram, YouTube, and TikTok. The company sells to a long-tail consumer base of vehicle owners (motorcycles, ATVs, everyday passenger vehicles, and large-tank commercial and heavy-equipment applications) and uses documented pilots with FedEx Ground, Lincoln County Nevada Fire Department, and LafargeHolcim Mining as commercial validation. The company reports more than 10,127 customers across 42 countries, claims 40 years of underlying combustion experience originating from racing-team and military-grade work, and has no disclosed institutional investors, parent company, or public funding history. No revenue, headcount, or financial performance figures are disclosed in available materials.

Name

Ferox

Legal name

Rennsli Corp

Website

https://feroxtabs.com

Company type

Private

Operating status

Operating

Short description

Ferox is a privately held Orem, Utah e-commerce company that sells patented, EPA-registered solid fuel catalyst tablets designed to dissolve in fuel and improve combustion across gasoline, diesel, propane, and LPG applications for consumer vehicle owners and commercial fleets in 42 countries.

Ownership category

akta.pro rank

Product category

Automotive Fuel Additives

NAICS

Basic Chemical Manufacturing (3251)

SIC

Miscellaneous Chemical Products (2890), Miscellaneous Products Of Petroleum & Coal (2990)

akta.pro primary industry

Petroleum Refining Catalysts (IMAEAIAA)

Keywords

• Fuel catalyst tablets
• Solid fuel additives
• Combustion catalysts
• Automotive fuel treatments
• Engine performance products

Headquarters

HQ city

Orem

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Marketing or Sales, Operations, Personnel, Technology or R&D

Revenue model

1. Product Sales (One-time): Direct-to-consumer sales of fuel catalyst tabs through e-commerce website. One-time purchases with varying pack sizes based on tank capacity needs.
2. Subscription/Recurring: Subscription options offering monthly, bi-monthly, or quarterly delivery with discounted pricing (e.g., Ferox Green at $40 vs $49.97 regular, Ferox Blue at $25 vs $34.97). Auto-renews with ability to skip or cancel anytime.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Ferox manufactures solid-state fuel catalyst tablets that dissolve in a vehicle's fuel tank and are designed to support cleaner, more complete combustion during the brief combustion event in engines. The company sells the same patented catalyst technology in color-coded pack sizes (Red for tanks up to 8 gallons, Blue for up to 20 gallons, Green for up to 50 gallons, and a Sample Pack) directly to consumers and commercial users through its own e-commerce website.

Product overview

Ferox is a single solid fuel catalyst technology platform marketed through four color-coded product variants differentiated by treatment capacity only, not fuel type compatibility. All variants (Ferox Red for up to 8 gallons, Ferox Blue for up to 20 gallons, Ferox Green for up to 50 gallons, and the Ferox Sample Pack with four 20-gallon tabs) use the same patented catalyst technology designed to support cleaner, more complete fuel combustion. The products are solid tablets that dissolve in fuel tanks and work during the combustion process. No AI, machine learning, or software components are involved.

Differentiator

Problem solved

Functional benefit

Products and services

• Ferox Red Solid fuel catalyst tablet sized for small-tank applications such as motorcycles, ATVs, side-by-sides, lawn equipment, and generators. One tab treats up to 8 gallons; packs of 10 tabs include scoring for 1/2 and 1/4 tab dosing. Cross-compatible with gasoline, diesel, and propane.
• Ferox Blue Solid fuel catalyst tablet for everyday vehicles such as cars, SUVs, pickups, and vans. One tab treats up to 20 gallons; packs of 10 tabs include scoring for 1/2 and 1/4 tab dosing. Supports cleaner combustion, smoother throttle response, and reduced soot across gasoline, diesel, and propane fuels.
• Ferox Green Solid fuel catalyst tablet for large tanks and high-capacity applications including large trucks, commercial vehicles, heavy equipment, and generators. One tab treats up to 50 gallons; packs of 6 tabs include scoring for 1/2 and 1/4 tab dosing. Designed to support more consistent combustion under demanding conditions.
• Ferox Sample Pack Introductory trial pack with four 20-gallon treatment tabs intended for first-time customers who want to test Ferox before committing to a full pack. Includes the Two-Tank Money-Back Guarantee allowing customers to test across two complete tanks and request a refund if no difference is noticed.

Quantifiable outcome

• 3-10% reduction in fuel consumption (FedEx Ground Fleets)
• +4 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators9 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Sea Foam: Sea Foam sells fuel additives and treatments for gasoline and diesel engines, directly addressing combustion quality, carbon buildup, and fuel-system cleaning. It is the closest analog to Ferox in the consumer/DTC fuel-additive category and competes for the same vehicle-owner use case.
• Hot Shot's Secret: Hot Shot's Secret markets fuel additives and lubricants focused on diesel performance, fuel economy, and combustion quality — directly overlapping Ferox's value proposition for diesel pickups, fleets, and performance enthusiasts. It is a niche DTC competitor in the same category.
• Opti-Lube: Opti-Lube is a smaller, specialty fuel-additive brand focused on diesel fuel improvers, lubrication, and combustion enhancement, often sold via DTC channels to diesel owners and fleet operators — a comparable niche-positioned DTC fuel-additive business.
• BG Products: BG Products sells fuel and engine treatment additives, primarily through professional installer and service-center channels, with comparable claims around combustion improvement and deposit control. It is a relevant analog for the service-channel and professional-fleet segments Ferox could pursue.
• Marvel Mystery Oil: Marvel Mystery Oil is a long-standing fuel and engine additive brand addressing carbon buildup, smoother running, and improved combustion — directly parallel to Ferox's value proposition and sold to a comparable consumer and small-engine audience.

Broad incumbents

• Lucas Oil: Lucas Oil is a large, established lubricants and fuel-treatment brand with extensive retail distribution across automotive parts chains, motorsports sponsorships, and a deep product portfolio. It competes with Ferox for fuel-additive dollars at the parts-store shelf.
• STP: STP is a legacy, mass-market fuel-additive and motor-oil brand with decades of retail distribution at major auto-parts and mass-merchant chains. It is the prototypical incumbent Ferox must displace in the consumer fuel-additive category.
• Chevron Techron: Chevron Techron is a major fuel-additive brand sold both at retail (where Chevron gas is sold) and as an aftermarket additive. As a parent-affiliated, large-budget incumbent, it competes for the same combustion-quality and fuel-economy use case Ferox addresses.
• Gumout: Gumout is an established fuel-system and combustion-cleaning additive brand with broad retail distribution. It directly competes with Ferox in the consumer fuel-additive category, with similar claims around injector cleaning and improved combustion.
• Royal Purple: Royal Purple is a performance lubricants and additive brand with retail and motorsports distribution, addressing fuel-economy and combustion-quality use cases overlapping with Ferox, particularly in the performance-enthusiast and light-commercial segments.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@feroxfueltabs-usa
• Facebookfacebook.com/ferox.tabs
• Instagraminstagram.com/feroxfueltabs
• TikToktiktok.com/@feroxtabs

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Ferox