What happens if you put unleaded in a diesel?
Unleaded petrol in a diesel is the classic 'petrol in diesel' mistake — it reduces lubrication and can harm the injection system if run. Don't start the engine; have it drained and flushed.
In an emergency: don't start the engine and call 0800 170 0644. We drain the wrong fuel on-site, 24/7, 365 days a year.
Call 0800 170 0644 24/7, 365 days a year · across the UK