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| Firms curb supplies in fuel scare | Firms curb supplies in fuel scare |
| (10 minutes later) | |
| Two supermarket chains at the centre of the "faulty fuel" alert have moved to stop supplies of suspect petrol. | Two supermarket chains at the centre of the "faulty fuel" alert have moved to stop supplies of suspect petrol. |
| Morrisons has stopped selling unleaded at 41 outlets supplied by the Vopak depot in Essex - at the centre of suspicions over fuel. | Morrisons has stopped selling unleaded at 41 outlets supplied by the Vopak depot in Essex - at the centre of suspicions over fuel. |
| Tesco is to empty its unleaded petrol tanks at 150 outlets in the South East, but will refill them with new stocks and continue selling the fuel. | Tesco is to empty its unleaded petrol tanks at 150 outlets in the South East, but will refill them with new stocks and continue selling the fuel. |
| Tesco's own tests found "significant silicon contamination" in its fuel. | Tesco's own tests found "significant silicon contamination" in its fuel. |
| A company statement said: "These tests show evidence of some significant silicon contamination in samples taken from unleaded petrol released from the Vopak terminal around 10 days ago. | |
| Laboratory | |
| "We believe this to be the source of contamination subsequently experienced by some customers in the south-east of England." | |
| Other tests on petrol taken from the tank of a car affected by allegedly faulty fuel have detected the presence of silicon, trading standards officers said earlier. | |
| Cambridgeshire County Council's trading standards department had the fuel sample tested at a London forensic science laboratory. | |
| A spokesman said silicon in the fuel could indicate the presence of silicone - a class of chemical compounds containing the element. | |
| Such products are used in diesel as anti-foaming agents, but can cause "serious problems" in petrol engines, a trading standards official said. |