Had a bit of a rattle (turns out it was just a stone trapped in the engine area) , but the technician warned me about what he found !
Bloody mice are eating the contents of the engine bay !!.......I'm not quite down to 3.9ltrs yet , but it does look bad .
The technician says he thought he could see a small plug holder of the wiring being nibbled and warned me that if they eat through the wiring looms , it's an 'insurance job' to fix

The car is not garaged , that might have been the answer ....but I'm not sure what else to do to stop them.
Anybody else live in the country and have experienced a similar issue ?
Here's a quick pic .......rubber at the left and the felt heat pad just to the right.
