Two stupid questions?

Question

ok, just so you're warned these two questions are way beyond basic and what everyone should know....however.....

1) What is the difference between oil and gasoline? I've heard these two terms used almost interchangeably.

2) What are gears like 2nd, 3rd, gear actually used for? I mean like in what exact instances would I need to go into 2nd gear, or 3rd gear?

Answer 1

ok
oil is used for sealing, cooling, cleaning and lubrication
gasoline is a fuel used in internal combustion engines

gears and gearing are kinda hard to explain unless you take em apart and look at what's happening. basically the gears come in sets and are on one shaft. the gear pairs are set up in ratios so that you can start your fast turning engine then put it into a very slow gear with the right ratio to keep it from stalling or ripping everything to shreads. then you shift into another gear taking advantage of that particular ratio etc...the higher the speed the higher the gear and the lower the ratio...top gear is close to 1:1 and overdrive means exactly that...the ratio is more like .75:1

like i said its a bit complicated but without it engines wouldn't be very smooth and would have a hard time getting from start to go

if you need more info just email me

Answer 2

No question is stupid in the process of learning, so never apologize for wanting to learn something. ;o)

1) Oil is usually what we call the crude version of gasoline. When oil comes out of the ground it must be processed and cleaned before it can be used as fuel aka gasoline.

2) Gears are shifted to accomodate the engine's required power at different given speeds (or slopes). When you start or want to go up-hill) you need an extra "push" to get going, and a low gear will give you that. Once you're going and/or are down hill, you don't need the extra torque or "push" anymore so you gear to a higher gear that will ease the "push". Think of the gears as the push you need to get to the next level of speed and/or climbing ability and you'll understand the concept easily.

We all had to ask too. Actually those were very smart questions. Have you see some of the other questions here? ;o)

Answer 3

Crude oil is refined (or cracked) and made into other fuels and oils. Gasoline is a very specific fuel made from crude oil. Oil is a more generic term for a number of different substances made from crude oil. For example heating oil is also made from crude oil. There are many oils not related to crude oil at all, such as olive oil, but I assume you mean crude oil derivatives.

Gears. The lower the number the lower the speed. First gear gets you moving but about 15 or so miles an hour you are likely to need to shift to second. You will probably want to be in third around 40 mph. Fourth around 60 MPH.

The exact speed cannot be told to you because it really depends on the engine and transmission combination. The rule of thumb is when you are accelerating shift when you hear the engine winding too tight. If you have a tachometer that means around 5000 RPM. If you don't just listen til it sounds like its complaining. When holding steady speed use what gear feels comfortable. (Generally 4th.) You get use to it with practice, easier than a verbal description.

Answer 4

Oil is a lubricant, it's used to reduce friction between moving parts so that they last longer. Some vehicles can run on oil but not many. Gasoline is a fuel, it's use to power the engine. It is pulled or injected into the cylinder, compressed and then fired with a spark. The explosion that occurs drives the piston away.

2nd, 3rd, 4th... are used to go progressively faster. You take off from a stop using 1st. gear. First gear gives you a great deal of torque but the top speed of the vehicle in that gear is pretty low. Once the car is moving, you shift (up) to the next numerical gear which provides more speed at the expense of torque. Since the car is already moving, torque need is reduced.

Answer 5

Oil is for lubricating. The oil we buy from other countries is refined over here to make gasoline. Let's say you have a car that you have to shift. You start off in first gear ( this is your lowest gear) Your car will only get up to a certain speed in first gear and then you shift to second gear and it will only get up to a certain speed and then you shift into third gear Once in third gear you can go as fast as your car will go. If you are driving on an interstate you want to be in third gear. If you are driving in the city and keep having to stop for lights you might just use first and second gears until you get out of town where the speed limit is probably 30 plus mph and then you would shift into third gear. When you have a standard shift vehicle, like you are talking about you should have someone show you how to shift the gears before you get out on the road.

Answer 6

Crude oil is in the earth and is the key ingredient in gasoline. It's also processed to be a lubricant for many things including your transmission and engine.

Gears are sprockets of different sizes that are connected through your drive shaft that make the car run at different speeds without the engine having to vary between a huge range of RPM's (rotations per minute.)

Answer 7

Oil is what gas is made of and is used to lubricate your engine. Gas is used to power your car.

1st gear is lower than 4th gear, witch makes for a faster and more powerful takeoff. Like your bicycle, low gears you can take off faster and go up hill better, but higher gears you can go fast. IF you drive automatic, just put in on D (fourth gear), and it will shift automatically. If it's standard, asked someone to teach you.

Answer 8

Oil and gasoline are two different types of crude oil. When crude oil comes to the united states it is refined into different grades of oil and one grade is gasoline another is karosine and there are other types but i dont know what they are. And as for grears different gears are used for different speeds. The faster you go the higher gear you need.

Answer 9

No question ever has been stupid.

I know you hear fuel oil expression.
that is in reference to diesel fuel.not gasoline.
but both of them come from crude oil.

gear is to wheel with equal or different diameter that are mesh to each other through indentation
the second gear the small wheel is moving the big wheel.
in the 3 er gear a not too small wheel is moving a not too big wheel.
done!!

Answer 10

Ok, hand over your man card. Come on, don't make me take it from you. seriously though. I see the gas/oil thing was answered so the other question - with an automatic transmission you would use 3rd or 2nd gears when decending a long and steep grade to help control the speed of the car without having to ride the brakes (using the brakes on long steep grades will cause them to overheat). Just be careful not to let the engine rev up too high.