Do you have photos of the oil spill?
A truck fuel tank has split and spilled about 350 litres of diesel across the North Western motorway in Auckland.
Police said significant traffic delays were expected after the truck fuel tank spilled the diesel and other debris near Patiki Rd at about 10:45am.
The spill was still being cleaned up.
Another three car crash at the Lincoln Rd offramp was adding to the congestion, police said.