Lack Of Heat - Block Heater Operation

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2015-2017 F-150 – Lack Of Heat – Block Heater Operation

Some 2015-2017 F-150 vehicles may exhibit poor heater performance caused by restricted heater cores.

Extensive use of the block heater may increase cooling system deposits which contribute to heater core restrictions.

It is recommended to plug in the block heater for 1 – 2 hours before starting engine when ambient temperatures are -15 degrees C (0 degrees F) or lower.

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Zerex Original Green Low Silicate Concentrate Antifreeze/Coolant 1 GA, 128 Fl Oz (Pack of 1)

Provides protection down to -34 degree fahrenheit
Helps prevent rust and corrosion
A patented organic acid corrosion inhibitor package to provide extended engine protection against rust and corrosion
Contains 30 – 50 ppm of denatonium benzoate as a bittering agent