Zerex 846439 Antifreeze Coolant Concentrate 1 gal Yellow
Concentrated yellow coolant protects heavy-duty diesel engines down to -36 °F and up to 334 °F boiling point
- Protects heavy-duty diesel engines down to -36 °F freezing point
- Raises boiling point to 334 °F for high-temperature operation
- Meets ASTM D6210 specification for heavy-duty diesel use
- Concentrate allows flexible 50/50 dilution with water
- Flash point of 250 °F adds safety margin during handling
Product identity
Zerex 846439 is a yellow antifreeze coolant concentrate supplied in a one-gallon plastic bottle. It is formulated for heavy-duty diesel trucks and meets the ASTM D6210 specification. The liquid has a pH of 9 and a specific gravity of 1.3.
Thermals and dilution
The concentrate must be mixed at a 50/50 dilution ratio before use. After dilution the coolant provides a boiling point of 334 degrees Fahrenheit and a freezing point of -36 degrees Fahrenheit. The flash point of the concentrate is 250 degrees Fahrenheit.
Packaging and compliance
The one-gallon container delivers the concentrate in a sealed plastic bottle ready for mixing. No additional accessories or software are included with this product. Sale of this item is not restricted in any state.
How it compares
Measured against everything we stock in Engine Coolant & Antifreeze, at today’s prices. Recalculated every night.
- Price $16.99
- Pricier than about 99% of the 9 comparable items (median $12.99).
Specifications
| Product | |
|---|---|
| Brand name | ZEREX |
Questions about this item
How do I install Zerex 846439 concentrate in my cooling system and what dilution step is often missed?
Mix the concentrate with water at the specified 50/50 dilution ratio before filling the system; skipping this step leaves the coolant too strong and reduces heat transfer.
What maintenance will this coolant require over time?
The product meets ASTM D6210 for heavy-duty diesel use, so follow the engine manufacturer’s drain interval and top up with the same 50/50 mix when levels drop.
What is the first limit reached under sustained high-temperature operation?
The coolant’s boiling point is 334 °F, so sustained temperatures above that will cause vapor formation and loss of cooling capacity.
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