There have been a lot of old-car fires lately. I went through the ’70s, the ’80s and most of the ’90s without ever having read much about car fires. Suddenly, they are happening all over the place. Here’s one reason: The ethanol in modern gasoline—about 10 percent in many states—is so corrosive, it eats through either the fuel-pump diaphragm, old rubber fuel lines or a pot metal part, then leaks out on a hot engine … and ka-bloooooie!!!
As someone who collects old cars, and keeps them up religiously, I am now replacing fuel-pressure regulators every 12 to 18 months. New cars are equipped with fuel lines that are resistant to ethanol damage, but with older cars, the worst can happen—you’re going down the road, and suddenly your car is on fire.
There’s more. I find that gasoline, which used to last about a year and a half or two years, is pretty much done after a month or so these days. If I run a car from the teens or ’20s and fill it up with modern fuel, then it sits for more than two months, I often can’t get it to start.
Ethanol will absorb water from ambient air. In a modern vehicle, with a sealed fuel system, ethanol fuel has a harder time picking up water from the air. But in a vintage car, the water content of fuel can rise, causing corrosion and inhibiting combustion.
It gets worse. Ethanol is a solvent that can loosen the sludge, varnish and dirt that accumulate in a fuel tank. That mixture can clog fuel lines and block carburetor jets.
Blame the Renewable Fuel Standard. This government-mandated rule requires certain amounts of ethanol and other biofuels be blended with gasoline and diesel fuel. But when Congress first passed RFS as part of the Energy Policy Act in 2005, our demand for energy was increasing. Today, it’s the opposite. Total demand for fuel has decreased thanks to more-efficient vehicles, more hybrids and increased environmental awareness. The EPA is set to release the 2015 standard in June. Meanwhile, some legislators are pushing to reform or eliminate the Renewable Fuel Standard entirely.
I just don’t see the need for ethanol. I understand the theory—these giant agri-business companies can process corn, add the resulting blend to gasoline and we’ll be using and importing less gasoline. But they say this diversion of the corn supply is negatively affecting food prices, and the ethanol-spiked gas we’re forced to buy is really awful.
Early model Corvette owners, keep a fire extinguisher handy!
by Jay Leno // March 4, 2015 // Autoweek
Comments