Coolant spec BMW 3 Series F30 (2015–2019) — type, volume, change interval
Which coolant to use in BMW 3 Series F30 (2015–2019) — type, colour, system volume and replacement interval.
Cooling System Specifications
| Parameter | Value |
|---|---|
| Make / Model | BMW 3 Series F30 |
| Production Years | 2015–2019 |
| Coolant type | G11/OAT |
| Colour | blue |
| System volume | 8.5 L |
| Mix ratio | 50:50 (concentrate / water) |
| OEM approval | BMW LL-98 |
| Replacement interval | every 3 years |
Coolant replacement is time-based, not mileage-based. Corrosion inhibitors degrade over time regardless of how far you drive.
Approved Coolant Brands
BMW Original, Febi, Pentosin SF
Mixing Rules
- Do not mix different coolant types (G11/G12/G13) — mixing causes a chemical reaction and sludge formation.
- When topping up, use the same type: G11/OAT.
- Always dilute concentrate with distilled water at a ratio of 50:50.
- Freeze protection at 50/50 mix: approximately –37°C.
Checking Coolant Level and Condition
- Check the level in the expansion tank on a cold engine — it should be between MIN and MAX marks.
- Fresh G11/OAT coolant is blue. Brown, cloudy or sediment-filled coolant must be replaced immediately.
- Hydrometer test: density at 50/50 mix should be 1.060–1.080 g/cm³.
FAQ
Which coolant should I use in BMW 3 Series F30?
Type G11/OAT (blue), approval BMW LL-98. Compatible brands: BMW Original, Febi, Pentosin SF.
How much coolant does a BMW 3 Series F30 hold?
The total cooling system volume is 8.5 L. A partial change will require less — calculate based on the volume drained.
How often should coolant be replaced in BMW 3 Series F30?
Every 3 years, regardless of mileage. Do not delay — depleted coolant causes corrosion of aluminium engine components.
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