Schaeffer's Logo Schaeffer’s 285 Fuel Shock

An EPA registered microbialcide and fungicide that prevents bacterial and fungal growth in fuels, and treats and eliminates existing microbial growth.


  • Maintenance treatment for vehicles that have been in storage for extended periods.
  • Removes bacteria in fuel storage tanks due to moisture.
  • Kills bacteria present in diesel fuel.
  • Prevents the growth of bacteria.


Brand Name Part # Size
Schaeffer S285/5GAL 5GAL PAIL
Schaeffer S285/4/1GAL 1GAL JUG
Schaeffer S285/12/1PT 1PT BOTTLES

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