ASTM D5752-10 (2017) PDF

Full title and description

Standard Specification for Supplemental Coolant Additives (SCAs) for Use in Precharging Coolants for Heavy‑Duty Engines — ASTM D5752‑10 (reapproved 2017). The specification defines physical, chemical, and performance requirements for SCA products used at a precharged level in cooling systems of heavy‑duty engines, including compositional limits, storage and compatibility requirements, and performance tests (corrosion, foaming, cavitation, deposits, effect on nonmetals and vehicle finish).

Abstract

This specification covers required properties and test methods for supplemental coolant additives intended to be added to engine cooling systems as a precharge for heavy‑duty engines. Test solutions include standard corrosive water, glycol/corrosive water mixes, and saline/glycol solutions; mandatory performance/chemical checks include corrosion in glassware and simulated service tests, foaming, water‑pump cavitation erosion‑corrosion, aluminum corrosion at heat‑rejecting surfaces, ultrasonic cavitation resistance, compatibility with glycol base coolants, storage stability, ash/chloride/silicon limits, pH/reserve alkalinity, and effect on vehicle finishes.

General information

• Status: Published as D5752‑10 (reapproved 2017); some catalog listings also show the document marked withdrawn and the standard has active revision work items initiated in 2025 (under review/revision as of Feb 21, 2026).
• Publication date: Effective/Published date: 01 April 2017 (reapproval of D5752‑10).
• Publisher: ASTM International (American Society for Testing and Materials).
• ICS / categories: 71.100.45 — Refrigerants and antifreezes (engine coolant fluids and additives).
• Edition / version: Designation D5752‑10, reapproved 2017 (often shown as D5752‑10(2017) or D5752‑10R17 in publisher catalogs).
• Number of pages: 7 pages.

Scope

The standard specifies general, physical, chemical and performance requirements for supplemental coolant additives when used at a precharged level in heavy‑duty engine cooling systems. It applies to liquid, solid, slurry or paste SCA concentrates that are intended to be diluted with water or glycol/water mixtures per manufacturer recommendations. The document does not address freeze/boil protection (those are governed by coolant specifications) but focuses on corrosion protection, cavitation/cavitation‑erosion mitigation, deposit/scale resistance, nonmetal compatibility, storage stability, and controls on ash, chloride and silicon.

Key topics and requirements

• Minimum nitrite (NO2−) concentration or combined nitrite + molybdate thresholds in service cooling systems to provide cavitation/corrosion protection; compositional minimums are specified for acceptable formulations.
• Performance tests and limits: corrosion in glassware mass loss, simulated service engine mass loss, water‑pump cavitation erosion‑corrosion rating, ultrasonic cavitation resistance, and corrosion of cast aluminum at heat‑rejecting surfaces.
• Compatibility testing with glycol‑based engine coolants and guidance on using SCAs with prediluted coolants or to upgrade light‑duty products to heavy‑duty performance.
• Limits and test methods for ash content, chloride ion, silicon content, pH (in distilled water), and reserve alkalinity.
• Foam control, storage stability (no chemical change over −7 to +55 °C in original packaging), solubility/dissolution requirements, and effect on vehicle finish (no adverse effect).
• Mandatory/annexed chemical requirements and a note that some cavitation test methods were under development (and subject to replacement when ASTM test methods are adopted).

Typical use and users

Primary users include SCA manufacturers (formulation and quality control), engine and vehicle OEMs specifying compatibility and acceptance criteria, fleet maintenance organizations and heavy‑duty service shops that precharge or service cooling systems, test laboratories performing ASTM referenced test methods, and purchasers specifying contract compliance for SCA products. The standard is used to ensure SCA products meet agreed chemical and performance thresholds when added as precharges to heavy‑duty cooling systems.

Related standards

Commonly referenced and related ASTM documents include (but are not limited to) D6210 (heavy‑duty engine coolant specification), D4985 (ethylene‑glycol base coolant), and multiple test methods cited within D5752 such as D1384 (corrosion in glassware), D1121 (reserve alkalinity), D1287 (pH), D1881 (foaming), D2570, D2809 and others used for specific performance and chemical determinations. The standard also refers to compatibility and cavitation testing standards (for example D5828) where appropriate.

Keywords

supplemental coolant additive; SCA; precharge; heavy‑duty engine coolant; cavitation corrosion; corrosion in glassware; foaming; water‑pump cavitation; storage stability; reserve alkalinity; nitrite; molybdate; low‑silicate coolant.

FAQ

Q: What is this standard?

A: ASTM D5752‑10 (reapproved 2017) is a specification that defines the required chemical and performance properties for supplemental coolant additives intended for precharging cooling systems in heavy‑duty engines.

Q: What does it cover?

A: It covers compositional criteria (e.g., nitrite/molybdate levels), performance tests (corrosion, cavitation, foaming, deposits), compatibility with glycol coolants, storage stability, and limits for ash, chloride and silicon, plus effect on vehicle finishes. It specifies the test solutions and referenced ASTM test methods to verify compliance.

Q: Who typically uses it?

A: SCA manufacturers, engine and vehicle OEMs, fleet engineers, maintenance/service organizations, and test laboratories that perform referenced ASTM methods use this standard to specify and verify SCA performance and chemical characteristics.

Q: Is it current or superseded?

A: The designation is D5752‑10 with reapproval in 2017 (effective/published date 01 April 2017). Some third‑party catalogs have listed the document as withdrawn; ASTM has active revision work items for D5752 (initiated in 2025) indicating the standard was under review/revision as of Feb 21, 2026 — users should confirm the current status with ASTM or their standards administrator before relying on the document for procurement or compliance.

Q: Is it part of a series?

A: D5752 is part of a family of ASTM standards addressing engine coolants and related fluids (Committee D15), and it cross‑references other D15 standards and test methods such as D6210, D4985, D1384, D1121, D1287, D1881 and others used for coolant and additive evaluation.

Q: What are the key keywords?

A: Key keywords include supplemental coolant additive, SCA, precharging, heavy‑duty engine coolant, cavitation corrosion, nitrite, molybdate, storage stability, compatibility, foaming, ash content.