BMW began utilizing green-colored coolant for vehicles manufactured after 2018. This marked a significant shift from their previously used blue coolant.
Understanding BMW's Coolant Transition
The introduction of green coolant signifies an upgrade in BMW's engine coolant technology. This new green coolant adheres to the HT-12 specification, designed for enhanced performance and protection in modern BMW engines.
Key aspects of this transition include:
- New Specification: The green coolant is identified by the HT-12 specification.
- Previous Specification: The older blue coolant was specified as G48.
- Color Change: The color shifted from blue to green.
- Compatibility: The newer HT-12 green coolant is backwardly compatible, meaning it can be used in systems originally designed for the G48 blue coolant.
It is crucial to understand that this specific BMW green coolant (HT-12) is not equivalent to the general IAT (Inorganic Acid Technology) green coolants widely available on the market. BMW's HT-12 coolant is a specialized formulation tailored for their vehicles.
Coolant Specification Comparison
To illustrate the change, here's a quick comparison of the two main BMW coolant types:
| Feature | BMW Blue Coolant (Older) | BMW Green Coolant (Newer) |
|---|---|---|
| Color | Blue | Green |
| Specification | G48 | HT-12 |
| Usage Start Year | Before 2019 | After 2018 |
| Compatibility | – | Backwardly compatible |
Compatibility and Important Notes
While the HT-12 green coolant is backwardly compatible with vehicles that originally used G48 blue coolant, it is always recommended to refer to your vehicle's specific owner's manual or a certified BMW service center for precise coolant requirements. Using the correct specification of coolant is vital for maintaining engine health, preventing corrosion, and ensuring optimal heat transfer.
