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thanos.m · 15th November 2019, 13:08

I had a mysterious coolant loss as well having to top up frequently I could not see anything leaking anywhere I thought the car was using coolant but one day I spotted what looked like dried coolant around the expansion tank with a faint sense of moisture around the cap so I popped I new cap on haven't lost any coolant in 2 weeks so far so I reckon it was just a failing radiator cap my p38 range rover which uses the same cap had also a mysterious coolant loss which was also attributed to a failing cap so might worth having a look edit: in my range rover you could also hear a very faint hissing if you put your ear close to the cap when switching off the engine after a nice long run

15th November 2019, 13:08	#10
thanos.m Avid contributor Rover 75 saloon Join Date: May 2019 Location: West Sussex Posts: 224 Thanks: 54 Thanked 41 Times in 26 Posts	I had a mysterious coolant loss as well having to top up frequently I could not see anything leaking anywhere I thought the car was using coolant but one day I spotted what looked like dried coolant around the expansion tank with a faint sense of moisture around the cap so I popped I new cap on haven't lost any coolant in 2 weeks so far so I reckon it was just a failing radiator cap my p38 range rover which uses the same cap had also a mysterious coolant loss which was also attributed to a failing cap so might worth having a look edit: in my range rover you could also hear a very faint hissing if you put your ear close to the cap when switching off the engine after a nice long run Last edited by thanos.m; 15th November 2019 at 13:14..