Why Is My Suzuki Bolan Losing Coolant Even Though There Are No Visible Leaks?

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Why Is My Suzuki Bolan Losing Coolant Even Though There Are No Visible Leaks?

I regularly top up the coolant in my Bolan, but I don’t see any puddles o r leaks under the van. Could the radiator still be leaking internally o r from a spot that’s hard to see? What are the common hidden radiator leak points in the Bolan?

Gari Specialist asked on 11 Apr 2025 13:03:23 pm

1 Answer

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Gari Master - on 11 Apr 2025 13:12:24 pm

Even if you don’t see coolant on the ground, your Suzuki Bolan could still have a hidden leak. Common causes include:

Small pinhole leaks in the radiator that evaporate as soon as the engine gets hot.

Leaky radiator hoses o r clamps that drip only under pressure.

Coolant loss through the heater core o r head gasket, which may not show up externally.

You can check for leaks using a coolant pressure tester o r look for white residue o r dried coolant stains around the radiator, water pump, o r hoses. Also, inspect the underside of the radiator—some leaks only happen when the engine is running.