Demmer Oil Company, Inc. provides Premium Diesel #2 w/ Diesel Guard Supreme. Premium Diesel fuel @ Demmer Oil Company, Inc.

Premium Diesel from Demmer Oil Company with Diesel Guard Supreme™ additive, provides outstanding performance & benefits.
Today’s sophisticated diesel engines depend on a superior grade of diesel fuel for maximum fuel economy, power and emission control. Diesel Guard Supreme™— premium diesel fuel additive—is specially formulated for today’s high performance diesel engines.

Benefits of Premium Diesel include:

  • Reduces downtime and costly repairs

  • Improves Fuel Economy

Light Duty up to 13.6% / Heavy Duty up to 7.5%

Reduced Black Smoke 30% * / Reduced Particulates 39% *

  • Increases Power

  • Boosts Lubricity

Low sulfur/aromatic diesel fuel can cause premature wear and scuffing of pumps and injectors. Wear that can lead to premature failure and expensive repairs. Diesel Guard Supreme™ contains a lubricity improver to prevent premature pump and injector wear that meets pump manufacturer’s requirements

  • Extends Life

  • Protection against Oxidation

  • Longer Filter Life

  • Maintains fuel stability

Fuel stability is essential to prevent formation of insolubles and sludge, formed by high engine temperatures and extended storage. These insolubles plug filters and injectors. Diesel Guard Supreme provides improved thermal and storage stability to meet or exceed industry and engine manufacture standards.

  • Provided quicker, more efficient starts (especially in cold Iowa winters)

  • Reduces Maintenance Costs

  • Controls Water and Moisture

Water is always present in diesel fuel. It causes corrosion, sludge, filter plugging and icing in winter. Diesel Guard Supreme contains demulsifier to separate water and fuel in storage tanks and a dispersant to disperse a controlled amount of moisture in the vehicle fuel tank to keep it dry.

  • Prevents Fuel/Water Emulsions

  • Prevents Sludge

  • Reduces Rust & Corrosion

  • Cleans Up and Prevents Injector Fouling

Injector deposit build-up can cause poor injector spray patterns that reduces engine performance. Diesel Guard Supreme prevents the formation of deposits as well as cleans up existing deposits as documented by the “Superior” rating in the Cummins L-10 Injector Depositing Test, Peugeot Coking Test and extensive field studies.


CONTACT Demmer Oil Company today to inquire about availability and ordering information.