• valvoline hd extended life engine coolant

Valvoline HD Extended Life is an engine coolant designed for trucks, busses, road construction machines, and industrial equipment. 

Valvoline™ unique formula with heavy-duty corrosion inhibitors provides superior long-life protection to all cooling system metals. Moreover, its anti-scaling chemistry prevents hard water scale and deposits that can limit the cooling system’s performance. 

Valvoline HD Extended Life offers unsurpassed protection for the cooling system against winter freezing and summertime overheating.

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