ASTM D 4985 Standard Specification for Low Silicate Ethylene Glycol Base Engine Coolant for Heavy Duty Engines Requiring a Pre-Charge of Supplemental Coolant Additive (SCA)
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ASTM D 4985 Document Information:
Title
Standard Specification for Low Silicate Ethylene Glycol Base Engine Coolant for Heavy Duty Engines Requiring a Pre-Charge of Supplemental Coolant Additive (SCA)
ASTM International
Publication Date:
Oct 1, 2005
Scope:
This specification covers the requirements for low silicate ethylene glycol base engine coolants
for cooling systems of heavy-duty engines. When concentrates are used at 40 to 60 % concentration
by volume in water, or when prediluted glycol base engine coolants (50 volume % minimum) are used
without further dilution, they will function effectively to provide protection against corrosion,
freezing to at least -37°C (-34°F), and boiling to at least 108°C (226°F).
NOTE 1 - This specification is based on the knowledge of the performance of engine coolants
prepared from new or virgin ingredients. A separate specification exists (D 6210) for heavy-duty
engine coolants which may be prepared from recycled or reprocessed used coolant or reprocessed
industrial-source ethylene glycol.
Coolants meeting this specification require an initial charge of a supplemental coolant additive
(SCA) and require regular maintenance doses of an SCA to continue the protection in certain
operating heavy-duty engine cooling systems, particularly those of the wet cylinder liner-in-block
design. The SCA additions are defined by and are the primary responsibility of the engine
manufacturer or vehicle manufacturer. If they provide no instructions, follow the SCA supplier's
recommended instructions.
The values stated in SI units are to be regarded as the standard. The values given in parentheses
are for information only.
This standard does not purport to address all of the safety concerns, if any, associated with its
use. It is the responsibility of the user of this standard to establish appropriate safety and
health practices and determine the applicability of regulatory limitations prior to use.
Keywords:
- coolant requiring SCA pre-charge
- engine coolant
- ethylene glycol
- heavy duty engine coolant
- heavy duty engine service
- low silicate engine coolant
- prediluted
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