Whats the difference between conventional and synthetic motor oil?

I drive a 2006 nissan altima. Is it really worth it to pay extra for synthetic? are there any benefits?Whats the difference between conventional and synthetic motor oil?
Mobil1 5W-30 synthetic oil pours @ -47 below 0 Farenheit. Cold starts weather it be Winter or Summer is where 80% of engine wear occurs. It's to your engines advantage for the oil pump to force the greatest volume of oil to critical frictional surfaces as fast as possible. Regular non-synthetic 5W-30 stops pouring completely @ -35 below 0.





Synthetic oil has a far better formulation of detergents, anti-wear properties and it volatilizes at higher temperatures. Your car manufacturer calls for 5W-30. Low viscosity synthetic oil actually cools the inside of the motor more efficiently than as if you used regular oil. The oil temperature will be lower. Synthetic oil is more slippery by nature thus you may pick up some fuel economy. Your motor will make more horsepower also as the oil pump will turn easier.





Mobil Oil has a teriffic website where all techinical aspects of synthetic and regular oil are completely covered. You'll be able to compare facts and figures between regular and full synthetic. Not many oil companies publish these comaritive facts.Whats the difference between conventional and synthetic motor oil?
I have been asked that question so many times I had to quit counting. Here is the basic's about oils. Conventional oil is a natural oil that comes from the ground. Synthetic oil is a man made material. natural oil does a great job at lubricating your motor. It does however tend to break down a lot more quickly. the Lubrication properties of oil is called viscosity. As any motor oil gets hot, the viscosity rating of the oil gets less and less. There for it must be changed. With synthetic oil, It tends to break down slower, therefor the viscosity level tends to be greater for longer periods of time. Because of the fact that it takes longer to loose its ';lubrication'; abilities you can go more miles with less oil changes. Most conventional oils requires you to change it at 3000 miles. With synthetic oils you can go up to 7000 miles. Now remember, all this depends on your driving conditions. If you are like most, then the 7000 mile oil change is were you are at.
Advantages of synthetic:


1. It virtually does not break down during use. This means a clean happy engine that require far less oil changes.


2. Less oil changes results in 3 other things:


a. I save money because I am changing my oil less times.


b. I save time because I have to crawl under the car fewer times.


c. I am helping to save the environment because I am contributing less waste oil and less oil filters.


3. It provides better lubrication, especially in cold weather.


4.Often times actually improves fuel mileage (I did on 2of2 of the vehicles that I own)


5. Engines run cooler (Harley air cooled engines have been documented at 40 degrees cooler)





I run Amsoil, they wrote the book on synthetic fluids, since 1972. Way before Mobil. (Mobil laughed at them for many years thinking nobody would want synthetic!)





The Amsoil oil filter is also superior in that it filters much better because of their nanofilter technology.





While you are at it, change your air filter with the Amsoil air filter. It will help save you fuel again, plus provide better air filtration... better than stock, even better than K%26amp;N (plus other expensive but not so great performing brands.)
The benefits are better gas mileage and you can double the oil change mileage plus synthetic lubricates better than conventional oil, synthetic is man made and conventional oil isn't.
The synthetic requires less oil changes than regular oil is an advantage. It is also supposed to do a better job of lubrication.
synthetic is man-made and distributes heat better than conventional. unless you are running your altima at autobahn speeds (100+mph), it is really unnecessary to get synthetic.
The price.