New Ethanol Blend Puts Millions of Engine Warranties At Risk
The U.S. Environmental Protection Agency's (EPA) decision to allow the sale of gasoline blended with up to 15 percent ethanol will be a nightmare for car owners who improperly fuel their gas tanks. Every major automaker has warned that millions of vehicle warranties will be voided if drivers fill up with E15.
The approval of E15 for use in vehicles manufactured after 2000 means consumers will pull into gas stations that could have as many as four pumps with different kinds of fuel—one for E10 (up to 10 percent ethanol); one for E15; possibly one for E85 (between 70 and 85 percent ethanol); and maybe one for old-fashioned gasoline. Some gas station pumps might not even have labels specifying which ethanol blend is which because not every state requires them.
"It is going to be extremely confusing and dangerous for consumers," said Sheila Karpf, a legislative analyst at the Environmental Working Group (EWG). "If they make a mistake and put E15 into an older car or small engine, there's a good chance they'll ruin their engine and the manufacturer's warranty won't cover the damage."
To advance consumer safety, EWG analysts have created an Ethanol Blends Guide and Fact Sheet to help drivers choose the right fuel for their vehicles. The analysis provides more information about the new E15 label requirements.
Ethanol is more corrosive and burns hotter than gasoline, properties that could cause some engines to stall, misfire and overheat. Fuel with higher ethanol blends emits more nitrous oxide and formaldehyde than gasoline, lowers mileage and damages fuel tanks and pumps.
"Instead of approving a fuel that will pose health and safety hazards and damage engines, the U.S. should invest in energy efficiency measures and research and development for truly sustainable biofuels," said Karpf. "The high cost of replacing or repairing engines will be tacked onto corn ethanol's other costs—including higher food prices, increased soil erosion and polluted water supplies."
To be safe, EWG recommends that consumers stick with E10 or regular unleaded gasoline if they can find it. If gas pumps are not labeled, consumers should ask a service station employee for more information about the fuel and the amount of ethanol it contains. Consumers should check with their engine manufacturers or mechanics to find out if their cars or small engines can safely run on E15 or other ethanol blends.
Here are other tips for consumers to cut the economic and environmental costs of driving:
- Maintain your vehicle properly:
- Keep tires inflated to the recommended pressure.
- Use the right grade of motor oil (check the manual).
- Replace air filters when you change oil (your engine will run more efficiently).
- Replace worn spark plugs.
- Repair leaks from engine oil or other fluids.
- Drive the speed limit and don't accelerate too fast or brake too hard.
- Minimize air conditioner use.
- Turn your engine off when idling for long periods.
- Get rid of excess weight in your vehicle.
- Drive less.
- Walk, run, or bike.
For more information, click here.
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Where Does the Deficiency Begin?<p>Nobody knows exactly how much vitamin D a person actually needs. The question of when a deficiency starts is correspondingly controversial. However, vitamin D is becoming increasingly popular.Not only is the pseudo-scientific literature on the "sun vitamin" experiencing an upswing, but the number of published studies has also increased enormously in recent years. For example, in 2019 <a href="https://academic.oup.com/edrv/article/40/4/1109/5126915" target="_blank">a study found that</a> Vitamin D is responsible for keeping the skeleton functional and is associated with cardiovascular diseases, type 2 diabetes and various types of cancer. <br></p>
An All-Rounder<p>Vitamin D levels in the body rise and fall according to sun exposure. If sufficient UV rays reach the skin, the body is able to produce the vitamin itself. However, the human body only derives an estimated 10 to 20 percent of its daily requirement from food.</p><p>The vitamin D that we synthesize from sunlight or food is not biologically active at first. Before the kidneys can produce the biologically active form of the vitamin, known as calcitriol, and release it into the blood, some metabolic processes must take place beforehand.</p><p>In addition, many organs have receptors to which the precursor of calcitriol binds. Further, this substance is also present in blood.</p><p>From this precursor, the organs then produce calcitriol themselves, which the body then uses for countless other processes in the body. This form of vitamin D thus regulates insulin secretion, inhibits tumor growth, and promotes the formation of red blood cells as well as the survival and activity of macrophages, which are important for the <a href="https://www.mdpi.com/2072-6643/5/7/2502/htm" target="_blank">immune system.</a></p>
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Association Versus Intervention Studies<p>Many studies on the vitamin are association or observational studies. "By definition, these studies cannot prove the causal relationship, but only point to mere correlations," said Fassnacht. The physician tries to illustrate this with an example:</p><p>"Imagine two groups of 80-year-olds. One group is spry, active and does sports. If you compare them with another group living in nursing homes, the difference in vitamin D levels will be dramatic. Life expectancy would also be extremely different."</p><p>But to try to explain the difference in fitness by vitamin D status alone is far too simplistic. "Vitamin D levels are a good measure of how sick someone is. But not more," says Fassnacht. </p><p>According to Fassnacht, none of the intervention studies carried out to date -- that specifically examined the effect of vitamin D on various diseases -- has been able to confirm the previous association and laboratory studies or the presumed positive effect of vitamin D.</p>
Further Research Is Needed<p>"If a coronavirus infection is suspected, it is therefore absolutely necessary to check the vitamin D status and quickly correct any possible deficit," said the recommendation of the paper published by the University of Hohenheim.</p><p>"Studies are underway to see whether vitamin D helps in COVID-19 infection, but I personally do not believe that this is really the case," says endocrinologist Fassnacht. Nevertheless, he says it is of course useful to carry out these studies.<br></p><p>"I don't want to rule out that there are actually subgroups of people who benefit from an additional vitamin D dose," he says. After all, this has been proven to be the case with a severe deficit.</p><p>In view of the study situation, Fassnacht does not think much of preventive, nationwide vitamin D substitutes. "My belief that the vitamin helps somewhere is very low. But, of course, I can be wrong."</p>
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