The employers have agreed to this extension and to reconvene at Acas on Monday for two days of further talks.
To ensure this time is most productively spent, the employers asked Unite to clarify what they believe the remaining areas of difference are between last Friday’s agreement and a dispute settlement.
ITV News has obtained details of the offer at the centre of the petrol tanker row, ahead of talks to avert strikes by fuel tanker drivers.
The unions may have to re-ballot over the tanker strike dispute, as the original ballot may be based on a flaw.
The union Unite are facing a Friday afternoon deadline on whether or not to call industrial action in the fuel tanker driver dispute.