• Prestone® Heavy Duty Antifreeze/Coolant

    A blend of ethylene glycol and a specially formulated inhibitor package designed for heavy duty cooling system applications. The product is designed to eliminate the need for an initial charge of supplemental coolant additives (SCA) on new vehicles and recharged systems. Can be used in all heavy duty vehicle applications.

      1. Always start with a clean cooling system.  Inspect cooling system and make necessary repairs.  Tighten all hose connections.  Collect used antifreeze and dispose according to local laws and regulations.
      2. Install Prestone Heavy Duty Antifreeze/Coolant using the owner’s manual recommended concentration of coolant and water.  DO NOT ADD ADDITIONAL SCA’s AT INITIAL FILL.  Prestone Heavy Duty Antifreeze/Coolant already contains the proper concentration of SCA’s to precharge all heavy duty cooling systems.  Add desired concentration of coolant/water to within 1 inch of overflow or as marked on radiator.
      3. With heater (if equipped) on high, run engine to normal operating temperature.  Check coolant level and add water or coolant again as necessary.  Replace radiator cap.
      4. If equipped with coolant recovery system, clean coolant reservoir and refill to proper level with the same concentration of coolant/water as used in radiator
      5. CHECK COOLANT LEVEL DAILY.  Add only pre-mixed coolant/water concentration of Prestone Heavy Duty Antifreeze/Coolant - never water alone or non-diluted coolant alone.
      6. Check SCA concentration at scheduled preventative maintenance intervals to maintain optimal corrosion and cavitation protection.  Add supplemental coolant additives when needed.

    WARNING: HARMFUL OR FATAL IF SWALLOWED. KEEP OUT OF REACH OF CHILDREN. CAUTION: Do not remove radiator cap when engine is hot. See owner’s manual for any special cooling system service instructions. Do not store antifreeze/coolant in open or unlabeled containers. Wash exposed skin thoroughly with soap and water after use.

    Prestone® Heavy Duty Antifreeze/Coolant is formulated with the advanced chemical technology found in Pencool® Cooling System Treatments resulting in an exceptional SCA pre-charged product compatible with Pencool® 2000 and 3000, as well as all other SCA’s.  It is recommended for use with Pencool® Need-Release ® Filters.

    Prestone® Heavy Duty Antifreeze/Coolant is designed for use in all heavy duty cooling system applications.  This product will provide outstanding protection against freezing, boil-over, cavitation erosion, corrosion, scale and foaming with a 50/50 mix of coolant and tap water without SCA’s at the initial fill.  Concentration levels should not fall below 40% or exceed 65% by volume.
    Pencool® is a registered trademark of the Penray Companies, Inc.


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