US President Barack Obama sought to reassure Americans that the Gulf of Mexico coast would "bounce back" from the worst oil spill in the nation's history. But, not without time, effort and reimbursement from BP.

The US President has been accused of responding too slowly to the oil spill disaster. In a bid to beef up disaster relief efforts, Obama has visited the Louisiana coast three times since the oil rig explosion killed 11 workers on April 20.

After receiving a briefing from the US Coast Guard in the White House on Monday, Obama said he is confident the crisis will be dealt with, but adds the impact of the disaster is going to be substantial.

Barack Obama, US President, said, "We're confident that not only are we going to be able to get past this immediate crisis, but we are going to be focusing our attention on making sure the coast fully recovers and that eventually it comes back even stronger than it was before this crisis."

The cap on the damaged oil well is now saving up to 1.7 million liters of oil a day from leaking into the Gulf.

That's up from 1.6 million liters on Saturday and about 960-thousand liters on Friday.

Admiral Thad Allen, US Coast Guard, said, "In the last 24 hours, the production of the Discover Enterprise over the wellhead produced 11-thousand barrels of oil. They continue to increase over the first three days of operation. We have gone from six-thousand to 11-thousand, trying to increase that production rate, ultimately close the vending valves and move to a greater capacity."

But it's going to take some time and it's not going to be easy.

Scientists are still trying to get a better determination on how much oil will be captured.

The oil leak won't be solved until two relief wells are completed. And that's going to take a couple of more months.

On Monday, BP said it plans to replace the current cap over the gusher with a slightly bigger one next month.

It's hoped this will fit over more of the outflow pipes, preventing less oil spewing into the ocean.