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Automotive dictionary (encyklopedia)

Dictionary of terms and abbreviations for cars (automobiles), motorcycles (bikes),
bicycles, boats, engines, machines, machining and car fixing.

# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Octane number

Every brand of gasoline has an octane rating or number which indicates its ability to resist knocking. When the numbers were first developed, the researchers found that normal heptane (a hydrocarbon) had almost no ability to resist knocking so they gave it an octane number of zero. Then they found that isooctane (also a hydrocarbon) was very resistant to knocking so they gave it the octane number of 100. To measure a particular sample of gasoline they discovered when it began to create detonation. Then they mixed isooctane to heptane to find out what percentage of isooctane created the same results as the sample of gasoline. In United States, there are two methods for determining the octane number depending upon operating conditions. The Research Octane Number (RON) is obtained when conditions are somewhat mild. The Motor Octane Number (MON) is obtained when conditions are somewhat severe and give a much lower number than the RON. The numbers on the gasoline pumps are usually an average of the RON and MON. Usually the pump number is about four numbers less than the RON. Thus if the automobile manufacturer recommends using gasoline with a RON of 91 or more, it would be acceptable to use pump gas rating of 87. The pump number is the anti-knock index which is half the sum of the RON and the MON. See motor octane number, research octane number
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Car Insurance Comparison – Why It is Important

Knowing what to look for when making a car insurance comparison is getting to be more important all of the time. Most, if not all states require motorists to have some level of auto insurance.

But now, states like Mississippi that do not have insurance databases are going to have them, and there must be proof of insurance before the automobile can get its tags renewed. According to the Jackson Free Press, the Mississippi legislature passed a new law in mid-March of 2011 requiring that motorists have more than just an insurance card, but actually have the insurance and be in the database. No insurance means no tags. This will prevent motorists from signing up for insurance and then canceling the policy to save money and still have the card.

With this becoming more common, it is more important now than ever to know how to make a car insurance comparison. Everyone wants to save money on auto insurance, and if that is the name of your game, you will want to get the absolute minimum that your state requires. That does not necessarily mean that you are going to have great insurance, though, because it will most likely just be liability. If your car still has some value to it, this may not be the best for you. If your car is totaled, you will have no way to recover the loss.

If you are already covered under a health insurance plan, it may not be necessary to get additional medical coverage with your auto insurance. If not, this could be crucial. Other additions that you will have to consider include towing, comprehensive coverage, theft, extra liability, car rental and a number of other options your agent will be happy to show you.

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