Double Dry ~ Gas Line Anti-Freeze

Double Dry Gas Line Anti-Freeze


Castle® Double Dry™ is a pure isopropyl dry gas that removes up to 10 times more water than cheaper methanol alcohol. It allows the water to mix with the fuel and be burned in the normal combustion process. Double Dry™ is safe for all types of fuel systems. Use in cold weather to prevent frozen fuel lines or any time to remove harmful moisture caused by condensation. Double Dry™ also contains a rust inhibitor to protect the fuel system while it removes moisture.


  • Automobiles
  • Snowmobiles
  • Diesel Engines
  • Marine
  • Snow Blowers
  • Fleet


1. Always add before filling tank.
2. Cars: one 12 oz bottle treats 16 gallons.
3. 4-Cycle: add one ounce for each gallon of gasoline.
4. Diesels: add 2 to 4 bottles per saddle tank (approx. 50 gallon).


  • 12 oz (#C1201) 24/case
  • 5 gal (#C1201-5) pail
  • 15 gal (#C1201-5) drum
  • 55 gal (#C1201-55) drum


Do not expose to heat or store at temperature above 120°F.


  • Color – clear
  • Specific Gravity – 0.7861
  • Flash Point – 53°F
  • Cleaning – N/A
  • Effect on Paint – none
  • Odor – alcohol
  • pH – 5
  • Density – 2.07

Product #:

C1201, C1201-5, C1201-15, C1201-55

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Download PDF:C1201-Double_Dry

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U.S. Customers
Castle AutoChem Products Ltd services Canadian customers only.

U.S. customers, please visit the Castle U.S. Website,
or call 1-800-876-0222.