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History of Additive Systems Inc.

Additive Systems Inc. (ASI) was started in 1984 by people experienced in the refined products industry. We identified problems with delivery complexity, changing technology, inexperienced technicians, and increasing governmental regulations. The solution was obvious: improve cost efficiency by providing the best trained technicians, high quality products, superior planned maintenance, and precision data control systems.


For nearly 15 years, before starting ASI, R.N. “Bob” Roggendorff worked for a major oil company. His last 10 years were spent as terminal manager of a fuels tank farm and truck loading facility. This invaluable “hands-on” experience coupled with dedicated employees and a “can do” attitude quickly established ASI as a dominant player in the refined products industry. Three short years after starting ASI in a shop behind his home, it was obvious to the ASI team (9 employees by 1987) that they needed a new home.


Today, ASI operates two separate manufacture facilities with over 35 hard-working employees. The main office is still located in ASI’s hometown of Broken Arrow, Oklahoma and the second facility is located in Denton, Texas.

Our Experience

ASI has created an innovative environment with the most proficient and experienced people in the refined products industry. Currently our team consists of approximately 35 employees and over 250 years of combined experience. This includes electrical, mechanical, computerization, custom fabrication, welding, and design for any of today’s high-tech needs, as well as having the knowledge and expertise to work with products that revolutionized the market almost 50 years ago.

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ASI Quality Products and Services

Our Quality Products & Services

ASI is a single source provider of turnkey solutions that takes the headache out of your refinery downtime problems. We offer the equipment, troubleshooting expertise, and maintenance services to keep your refined products flowing with better control, fewer problems, and less downtime. We serve the industrial, commercial, agricultural, and residential industries.

We Provide Additive Systems For:

    • Gasoline Additives
    • Diesel Additives
    • BioDiesel Additives
    • Compressed Natural Gas Additives
    • Ethanol Additives
    • Jet Additives
    • Water Additives
    • And Much More

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Our Solutions

Downtime is every company’s nightmare. When things go wrong, rapid response is critical to your bottom line. Preventive maintenance is one of the best solutions. Quality products is another. Having both works best only when you have someone to call who knows the refined products industry best. So, call ASI first.

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