0
The answer is very obvious. Before 1975 cars used leaded fuel which burned at lower temperature and didn't have cat converters in the exhaust. This also formed a lubricating layer within the cylinders as lead turns to liquid at low heat temps, but as everyone knows, lead is bad for the environment and is very toxic to anything living, and even today the highest levels of lead in the ground (and this is true all over the world) is along sides of roads and highways that were around before 1975 as the leaded gas fumes settled along the roadsides, and that's thousands and thousands of miles worth. After 1975 cars burned unleaded gas which meant that the engines all had to be redesigned with different metals as unleaded gas burns much hotter (old cars use to run at about 160 degrees to 180, but new cars run at 200 to 210), and if you used unleaded gas in a car the needed leaded, it would burn much hotter and fry the engine,. The same is true in reverse. Put leaded in a car the requires unleaded and you now have an engine that's loaded up with carbon, and a clogged cat converter that will not allow your engine to run more and more as it builds up in the cat until it will not even start because it can't eject any exhaust. It's like stuffing potato's in your exhaust and then trying to start your car. The result of all the gas fumes building up in the exhaust will result in a big BOOM as the gas ignites within the exhaust system. The cat converter is designed to get very hot, and burn off any unburned fuel that made it past the cylinders (Hydrocarbon) as to help with environmental issues.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
Advantages using unleaded petrol for cars?
in petrol we have 2 types.they are 1.leaded petrol 2.unleaded petrol in leaded petrol we have lead compounds so we call it as leaded petrol. in unleaded petrol we do not have lead compounds. the use or advantage of unleaded petrol is it does not emit harmful gases in to the environment. but leaded petrol emits harmful gases. cracking process takes place in unleaded petrol. cracking means it is a process of converting harmful gases into harmless gases. but this cracking process cannot be done in leaded petrol bcoz lead compounds decomposes the catylsts used in cracking process
Does using unleaded petrol reduce the greenhouse effect?
Yes because unleaded produces less carbon dioxide and other greenhouse gases than leaded petrol. it leads to a reduction in greenhouse gases and acid rain.
Is four stroke petrol unleaded?
Yes its using petrol unleaded while two stroke using two stroke oil
Disadvantages of using unleaded petrol?
There is non.... all cars built since 1970 something must use unleaded. Leaded fuel will foul up the injection systems and really gunk up the cylinders But you also have fuel emissions and pollutants. That's why e10 (ethanol) is being added to the equation
What happens if you put unleaded petrol in your car instead of leaded?
Where are you at? I haven't seen leaded gas or petrol since I was in grade school. They used to call it "regular" and there was that and diesel until they decided the lead in gasoline was bad for us and started offering unleaded. Eventually, every gas station in the U.S. phased regular gas out. If you have an old car from the days of leaded petrol, you'll probably have to put unleaded in it some time (unless you live in a country where they still have leaded gas at the stations). If you put unleaded gas in an old car, you can get a fuel additive to protect the engine from the harsher fuel. Over time, using unleaded in an old engine can cause some of the gaskets to dry out and start leaking. It won't hurt just one time, but it's an accumulative effect if you do it all the time.
Can you used leaded petrol in lieu of unleaded in an emergency?
Yes. The biggest risk of leaded gas is that you will "poison" the catalytic converter, meaning that you'll flunk your next emissions test. However, apparently you might get away with using a couple of gallons. Otherwise, occasional use of leaded fuel shouldn't hurt your engine. If I were stuck in the middle of the Amazon with an empty gas tank, I'd definitely accept any leaded fuel that came my way. Be aware that most pumps that still sell leaded gas use larger nozzles (deliberately) that won't fit in the fuel filler of unleaded cars. So you'll need a long funnel or something like that.
Can you use normal unleaded petrol in a Mazda rx8?
Actually, I am using the Unleaded 95 for my Rx 8 (1.3 192CH) 2008. I hope that it's not bad for the RX8 ..
What are the risks of using leaded gas to engines designed to work on unleaded gas?
You'll damage the Catalytic Converter,thats it. The engine would be fine otherwise..
What is leaded fuel?
It's the gasoline using the additives containing lead to improve the octane number.
Can I use leaded regular instead of unleaded premium in my 2002 Toyota gt?
Yes, that is what Toyota recommends. Using Premium fuel will provide no benefits whatsoever and is a total waste of money.
Should you use regular or premium gas for BMW 328?
BMW always recommends using 98 RON petrol (gas). Which is premium unleaded.
Does it really matter if you unleaded vs super unleaded gas?
Unless your owners manual says that you must use super unleaded gas, you should just use regular unleaded. Otherwise you are just wasting your money and possibly harming your engine. super unleaded petrol has a higher octain rate than unleaded. check your owners manual for the optimal rate you should be using for the engine.
