A new study finds that more than 70 percent of the petroleum in gasoline and diesel cars is leaking or leaking out of fuel tanks, a problem that could put millions of Americans out of work and lead to more fuel costs.

A study by the University of Michigan researchers found that about 70 percent to 80 percent of petroleum is leaking out from fuel tanks.

The researchers say it’s a problem in vehicles from 2012 to 2017.

According to the researchers, the number of fuel-related leaks increased by 20 percent between 2012 and 2017, and the amount of spilled fuel doubled.

The amount of oil spilled in fuel tank spills rose from about 1.3 million barrels in 2012 to 6.6 million barrels last year, according to the study.

The study says fuel tank leaks are a major cause of petroleum-related fires.

In 2018, the average cost of gasoline and other fuel was about $4.40 per gallon.

According to the report, the cost of fuel spills in 2017 was $6.2 million, up from $3.2,000 in 2016.

“The problem with fuel tank oil leaks is that the leakage rate is increasing and we’re finding more and more of these fuel leaks,” Dr. Robert Moseley, the study’s lead author and professor of petroleum engineering and environmental engineering at Michigan, said in a statement.

“There are more leaks, and they’re happening more frequently and in greater numbers.”

Researchers from the University and the University at Albany in New York found that nearly half of all fuel tank gas leaks in the United States in 2017 were due to oil leaks.

The research, published in the journal Chemical Engineering, says that in the past, the fuel tank leak rate was relatively low, at about 0.3 percent per year.

Researchers said that because of this low rate, the rate of fuel tank spillage was increasing and the rate was increasing with each year.

“Our study suggests that it is likely that the fuel leak rate is continuing to increase, with the average annual rate of increase increasing from 0.4 percent in 2012-2017 to about 0,8 percent in 2018-2021,” the study states.

The researchers noted that in addition to fuel tank fires, other causes of fuel spillage included: oil leakage, leaking or deflating tires, and improperly sealing the tank.

The study also found that the percentage of vehicles that had a fuel leak increased from 26.9 percent in 2016 to 29.9% in 2017.