Coolant spec SEAT Leon III (2012–2020) — type, volume, change interval
Which coolant to use in SEAT Leon III (2012–2020) — type, colour, system volume and replacement interval.
Cooling System Specifications
| Parameter | Value |
|---|---|
| Make / Model | SEAT Leon III |
| Production Years | 2012–2020 |
| Coolant type | G13/HOAT |
| Colour | violet |
| System volume | 5.8 L |
| Mix ratio | 50:50 (concentrate / water) |
| OEM approval | VW TL 774-L |
| Replacement interval | every 0 years |
Coolant replacement is time-based, not mileage-based. Corrosion inhibitors degrade over time regardless of how far you drive.
Approved Coolant Brands
SEAT Original G13, Shell Coolant G13, Hepu
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: G13/HOAT.
- 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 G13/HOAT coolant is violet. 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 SEAT Leon III?
Type G13/HOAT (violet), approval VW TL 774-L. Compatible brands: SEAT Original G13, Shell Coolant G13, Hepu.
How much coolant does a SEAT Leon III hold?
The total cooling system volume is 5.8 L. A partial change will require less — calculate based on the volume drained.
How often should coolant be replaced in SEAT Leon III?
Every 0 years, regardless of mileage. Do not delay — depleted coolant causes corrosion of aluminium engine components.
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