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Simon W · 9th February 2019, 15:10

I have exactly the same problem as Copilot (post 1) and fitting a new tank cap did not solve it.

If the coolant level is on the MAX mark (measured at cold) it leaks heavily from the tank cap as soon as the engine warms up.

If the coolant level is roughly 500ml below the MIN mark (measured at cold) it doesn't leak at all from the cap.

I have no idea what the cause is.

9th February 2019, 15:10	#9
Simon W This is my second home Rover 75 2.0 Litre Club Saloon Join Date: Nov 2006 Location: S Posts: 3,280 Thanks: 38 Thanked 50 Times in 47 Posts	I have exactly the same problem as Copilot (post 1) and fitting a new tank cap did not solve it. If the coolant level is on the MAX mark (measured at cold) it leaks heavily from the tank cap as soon as the engine warms up. If the coolant level is roughly 500ml below the MIN mark (measured at cold) it doesn't leak at all from the cap. I have no idea what the cause is. Last edited by Simon W; 9th February 2019 at 15:12..