Soloby Rob
Banned
first off ignore the usual comedians.... they make stupid comments either cos they aint got the knowledge to make sensible ones, or you were right in your assessment
2 litres down on oil shouldnt be terminal.
do you know what the temp gauge was doing.
you said it wouldnt restart.... we need to know if it turned over on the starter or not... any noises or silence etc.
did the red oil light come on whilst it was still running?
any water in the radiator?
terminal bang is often the camshaft drive belt breaking.
if its terminal because of oil id expect the crankshaft bearings to be seized so the starter wont turn the engine over... ... if it turns over but dont fire up id look at camshaft belt.
That's a bit long winded, engine is cream crackered sums up the situation