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Immediately serious damage will be done. Why in the world would you want to use leaded fuel which you cannot even buy in the U.S. Where are you getting leaded fuel and why?
In addition to the hydrocarbons present in normal gasoline, leaded gasoline contains tetra-ethyl lead or other lead alkyls for their anti-knock effect.
I don't think there is a way to visually tell the difference between leaded and unleaded fuel. However, leaded gasoline has become "extinct" and it is more likely that you have unleaded gasoline in the can.
It takes unleaded I think
Leaded gasoline was banned in the US in 1996 up until now. This was implemented through the Clean Air Act of 1996.
Yes, it is unleaded. No gasoline sold for consumer vehicles in leaded.
Leaded gasoline.
It depends what you mean by 'better'. Lead used to be added to gasoline to stop pre-ignition or detonation (which causes engine knock or 'pinking') but it was found to have very bad side effects environmentally and physiologically. most countries have banned the use of leaded gasolines, and modern gasoline have other ways of dealing with detonation. so i guess, unless you like bad air and bad health, unleaded is best.
This is the normal gasoline used for modern cars, only some older ones still need leaded gasoline.
The average price of a gallon of regular leaded gasoline in 1974 was 53 cents.
Yes, it is unleaded. No gasoline sold for consumer vehicles in leaded.
Not Really. The motor will be perfectly fine but the lead deteriorates the catalytic convertors and eventually destroys them rendering them useless over time. In order to pass smog inspections, you would need to replace your catalytic convertors if you have consistently run leaded gasoline. If you have a race car in which you are trying to squeeze out the most performance possible, using leaded fuel will help you in your quest for the highest octane gasoline and the most horsepower.