Buy Motor Oil

Why should I care which brand or type I get when I buy motor oil?  Is there really any difference between the cheap ones and the expensive ones?  Between synthetic and non-synthetic engine oils?  Getting the right answer could be crucial to your car's performance and longevity.
Image via WikipediaWhen it comes to motor oils, generally you get what you pay for.   While that cheap petroleum-based motor oil you've got your eye on may have the API (American Petroleum Institute) symbol on the side, this only ensures that it meets minimum specifications.  It only means you can be reasonably sure that the oil will adequately protect your engine.
Nevertheless, most of us want to do better than that when it comes to our cars.  With the amount of money we invest in them, more and more we need them to last longer and perform satisfactorily.  Taking the time to learn the science of motor oils is essential  to determining which type of oil has the best protection and performance characteristics.
An investigation regarding petroleum oils versus synthetic oils will lead to the conclusion that synthetic oils are better in almost all cases.  Because synthetic oils are specifically designed for lubrication, as opposed to being manufactured from a refined substance (as petroleum-based oils are), they are free of many of the impurities present in petroleum oils.  Thus they need fewer additives and those additives they do contain are used up much more slowly, allowing them to do their job over a longer period of time.  This makes for longer performance.  The ultimate result is less money spent on oil changes over the life of your car, along with extending the life of your car.  This is why you should pay close attention when you buy motor oil.
The Motor Oil Guy

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