What this product reference covers.
Engine coolant combines water, glycol where required, and an inhibitor package to transfer heat and protect cooling-system metals.
Products within the family.
Names used in commerce can overlap. Use the nominated standard and exact grade rather than relying on a generic product label.
Ethylene-glycol coolant
Ethylene-glycol coolant is a recognised engine coolant / antifreeze category whose exact composition, grade limits and suitability must be confirmed from the governing specification and equipment requirement.
Propylene-glycol coolant
Propylene-glycol coolant is a recognised engine coolant / antifreeze category whose exact composition, grade limits and suitability must be confirmed from the governing specification and equipment requirement rather than inferred from the generic label.
Water-based coolant
Water-based coolant is a recognised engine coolant / antifreeze category whose exact composition, grade limits and suitability must be confirmed from the governing specification and equipment requirement rather than inferred from the generic label.
IAT / OAT / hybrid inhibitor technologies
IAT / OAT / hybrid inhibitor technologies is a recognised engine coolant / antifreeze category whose exact composition, grade limits and suitability must be confirmed from the governing specification and equipment requirement rather than inferred from the generic label.
What the product is built from.
| Component | Technical role |
|---|---|
| Water carrier | Provides the continuous phase and controls concentration and freezing behaviour. |
| Active functional chemical | Delivers the product’s primary technical function. |
| Inhibitor / stabiliser package | Controls corrosion, storage stability and material compatibility. |
| Trace contaminants | Unwanted ions, solids or organics can disturb performance and equipment life. |
Define the decision before selecting the panel.
- 01
Confirm new engine coolant / antifreeze identity, grade and fitness for the intended application.
- 02
Detect contamination, degradation, mixing or storage-related change.
- 03
Investigate abnormal equipment, combustion, filtration or handling behaviour.
- 04
Establish a representative baseline for later comparison.
- 05
Support specification, maintenance and root-cause decisions with corroborated evidence.
What each result contributes.
“High” and “low” are directional investigation prompts, not pass/fail decisions. Corroborate them using the correct specification, baseline and companion evidence.
| Test / parameter | Typical methods | Why it matters | Possible causes when high | Possible causes when low |
|---|---|---|---|---|
| Concentration / active component | Product specification, density or refractive index | Confirms mixture strength and detects dilution or concentration. | Over-concentration, evaporation or incorrect make-up. | Water dilution, leakage, wrong product or degraded active component. |
| pH | Product-specific ASTM / ISO method | Indicates acid-base condition, inhibitor state and contamination. | Excess alkalinity, wrong additive or contamination. | Acid formation, depletion, wrong water or contamination. |
| Conductivity / ionic contamination | Product-specific conductivity method | Screens dissolved ionic material and water quality. | Salt contamination, degraded inhibitors, hard water or wrong product. | Purified formulation, dilution or depleted ionic additives. |
| Elemental / ion profile | ICP-OES, ion chromatography or product specification | Confirms inhibitors and detects contamination or component ingress. | Additive overdose, corrosion products or external contamination. | Dilution, inhibitor depletion or different formulation. |
| Appearance / insolubles | Visual, gravimetric or filtration method | Screens precipitation, corrosion debris and foreign matter. | Degradation, mixing, corrosion, biological growth or dirt. | Clean fluid; settled or unrepresentative sampling can under-report. |
Condition-monitoring application.
Once the product is in service, the question changes from “does it meet a product requirement?” to “what has changed, why, how confident are we and what action is proportionate?”
- 01Use a stable, representative sampling point and document operating hours, top-ups, transfers and maintenance.
- 02Trend method-consistent results rather than treating one value as a complete diagnosis.
- 03Separate new-product conformance from in-service condition and machine-wear questions.
- 04Escalate correlated evidence and rate of change; confirm surprising results before major action.