Can you advise what this may be, is it expensive to repair? Driving heard muffled "pop" driving fine pulled up 2-300m still driving well. Notice oil leaking badly, lifted bonnet and oil everywhere also noticed hose from coolant to? (Not sure)off. Oil also noticed inside cooland bottle.
The van has been parked up for 3 weeks during bad weather as ill, had to be jump started and ahd been running for half an hour or so in total. No warning lights on, noises, smells etc.