Zerex
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.
Highlights
- 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
Specifications
| Brand | 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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