So i need to use van after its been sat for a month. Running fine prior to that and just was not required, so sat in drive. As it had been sitting, i stuck battery on charge, and checked oil (ok) coolant level in expansion tank (ok) and went to check level in header tank, and as i unscrewed dalek cap thick black oil came out.
know it cant be good, so what should next steps be?
not mechanically minded, so be gentle please
Thanks in advance
Wee