What to do first
- Let the engine cool fully before checking coolant level.
- Check the expansion tank for MIN/MAX level markers.
- If low, top up with the correct coolant (or water in an emergency only).
- Check under the car for wet patches and note colour (pink/blue/green/orange varies).
Important: If the temperature rises or you see steam, stop driving.
Repeated overheating can warp the head or blow the head gasket.
Common causes of coolant leaks
🧵 Split hose / loose clamp
Hoses harden with age. Clamps can loosen, causing drips under pressure.
🧊 Radiator leak
Cracks or corrosion can cause coolant loss, often seen at the front of the car.
🌡 Thermostat housing
Common leak point. Plastic housings can warp or crack.
🚿 Water pump leak
Coolant can leak from the pump seal. Sometimes you’ll see a trail near the belt side.
🔥 Heater matrix / pipes
Misting windows, damp carpets, sweet smell inside can indicate a heater leak.
🧯 Head gasket symptoms
Pressurised hoses, constant coolant loss, white smoke or “mayo” can be warning signs.
Can I keep driving?
- Small seepage: maybe short trips if level stays stable (still needs fix).
- Visible dripping: book ASAP to avoid overheating.
- Overheating / steam: don’t drive.
- Coolant light on: stop, cool down, and check level.
How AutoAid finds the leak
We inspect hoses, radiator, thermostat area, water pump and common leak points. We’ll advise whether it’s safe to drive, and we confirm pricing before any repair work.
✅ Leak source inspection
✅ Cooling system checks
✅ Safety advice (drive / don’t drive)
✅ Clear pricing before work
Coolant leak in Warrington?
WhatsApp your reg, postcode and a photo of the leak if possible.