Our recommendation is to add DF5 to every full tank. DF5 works well with approximately 1 ounce to every 25 gallons.

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NOTE: If adding DF5 to half or a quarter tank please adjust accordingly. For older vehicles your results may or may not be immediate as DF5 will flush your fuel system from your fuel tank to your injectors and may take a couple of tanks to get to optimum results.

 

Emissions will decrease within 300 seconds (5 minutes) on average.