It's booked into landrover on Monday for the coolant issue, they are too full to see it before then, and no I can't see the leak, I had it at a local garage earlier this week and they said it was either a cracked cylinder or head gasket issue and I was as well to replace the engine. So I thought...

my 2002/03 diesel range rover wont switch off, its very hot under the bonnet, and there is noise coming from either the ECU, environmental box, or glow plug relay, three hours after parking for the night. it's been using a lot of coolant, needing a litre a day the last two weeks, does...