Coolant leak / Mystery - help!! SOS!!

[Dellmassive]

Quick question re leakage.... would anyone recommend a sealant like K Seal for one of these leaks? Needing to top up the reservoir about once every 1000-1500 miles and can't find any evidence of a leak...

No, but can have the cooling system pressure tested to find the leak.

Possibly charge cooler leaking coolant into the intake when engine is warm.?

 

[watsonm13]

Just an update.... The leak was traced to the exhaust gas cooler thingy... however there was also a problem with the charge air cooler... which caused the engine to overheat as the temp gauge and water level warning were reading incorrectly.... leading to the cylinder head failing.... damaging one of the cylinders...... Long story short, nearly £10k later we have a van with a brand new engine and no water leak... and no time to go camping cos it's overtime to pay for it all

 

[Dellmassive]

jeez . . .

a brand new engine!!

so route cause was EGR cooler leaking AND water charge cooler leaking. - not good.