A traditional coolant ideally suited for older vehicles this HD expert classic antifreeze/coolant is a fully formulated engine coolant based on an exclusive formulation of corrosion inhibitors. It is a low silicate; phosphate and amine free; aluminum compatible coolant that you can use in automotive, light duty, heavy duty diesel and natural gas engine vehicles such as on-road truck, off-road and farm equipment. Experts recommend this product for use where a fully formulated heavy duty diesel coolant is required.

• Heavy duty diesel antifreeze/coolant is a superior fully formulated ethylene glycol based product containing SCA pre-charge with low silicate corrosion inhibitors
• Provides exceptional cooling and excellent protection against freezing in winter
• Recommended for all heavy duty diesel applications including truck, off-road, marine and farm engines
• Complies with the low silicate requirements necessary for diesel engines
• Engines with aluminum heads or blocks are most effeciently protected by regular Unival Anti-freeze which offers an inhibitor system particulary suited to aluminum (HH #8612-147/165)
• Consult Owner's Manual to determine cooling system capacity
• Check cooling system for leaks
• Flush system while heater is on high (for best results use Unival Rad flush - HH #8651-581)
• Open radiator petcock and drain radiator
• Close petcock
• Add required solution to achieve a minimum 50/50 mix in the total cooling system
• To remove air bubbles, start engine and run until heater is operating
• Top up radiator and coolant reservoir to required level
• Reset rad cap
• Check coolant condition periodically and change annually for best corrosion protection
• No odour
• pH 10.4
• Non-flammable
• Specific Gravity: 1.067 g/L
• Reserve Alkalinity: 10 minimum