Consumer boycotts of BP are taking a financial toll on owners of filling stations that bear the oil giant's familiar green and yellow logo.

So, even though all of those stations are now independently owned, BP has agreed to extend them an estimated $50 million to $70 million lifeline, the Associated Press reports:

The cash component will be based on distributors' volume and will be more for outlets along the Gulf Coast than for those elsewhere in the country, said John Kleine of the BP Amoco Marketers Association.

In the weeks after the Deepwater Horizon disaster, NPR reported that boycotts were likely to hit mom-and-pop station owners and not BP itself. At the time, experts said the spill was unlikely to significantly change consumer behavior.

As the seemingly never-ending spill continues, however, the AP reports some BP-branded stations have seen sales drop anywhere from 10 percent to 40 percent.