微小型车正面碰撞事故死亡率是大车两倍！！

[viper99]

嗯，好马要吃好草 91号油比87号油贵好多

我也不太懂，３Ｃ加油站的哥们说９１号油跑得比８７号油远，虽然贵８分钱，跑得远，基本扯平了

 

[ccc]

嗯，好马要吃好草 91号油比87号油贵好多

错了。车，非马也。

发动机设计用什么油，就用什么油，不是油的标号越高对发动机越好。

当然，您加最高标号的油，石油公司高兴。

 

[ccc]

我也不太懂，３Ｃ加油站的哥们说９１号油跑得比８７号油远，虽然贵８分钱，跑得远，基本扯平了

谁说的？这纯属误导。

发动机设计用什么油，就用什么油，不是油的标号越高对发动机越好。

 

[ccc]

从安全系数考虑，肯定是车越大越好。每年多花$2,000－$3,000(4.0L-5.0L+)，买个更高的安全系数。

 

[West Life]

从安全系数考虑，肯定是车越大越好。每年多花$2,000－$3,000(4.0L-5.0L+)，买个更高的安全系数。

买个大车多烧油，村长心里乐开花

 

[ccc]

买个大车多烧油，村长心里乐开花

主要是考虑到您开车更安全。

对了，大车，还得是4X4。

 

[viper99]

谁说的？这纯属误导。

发动机设计用什么油，就用什么油，不是油的标号越高对发动机越好。

唉, 老板和打工的说法怎么不一样呢, 崩溃了

 

[ccc]

唉, 老板和打工的说法怎么不一样呢, 崩溃了

如果设计使用87号油的发动机，您加91号以上的油，看看发动机有什么反应。

反之，也不成。设计使用高标号油的发动机，您加87号的油，会毁掉发动机。

 

[风 雨]

Which gas station do you get #91 gasoline that's only 8 cents more than #87?

我也不太懂，３Ｃ加油站的哥们说９１号油跑得比８７号油远，虽然贵８分钱，跑得远，基本扯平了

 

[ccc]

Which gas station do you get #91 gasoline that's only 8 cents more than #87?

他是在同89号的油做比较。

价格差，应该是在87:89, 9 cents/L; 89:90, 5 cents/L左右。所以，87:91大概差14 cents/L.

 

[viper99]

Which gas station do you get #91 gasoline that's only 8 cents more than #87?

Be honest, I can't remember what's the exactly price difference btw #87 and #91 gasoline. I just got #91 gasoline at the rate of CAD$1.09 from an ESSO gas station the day before yesterday.

 

[viper99]

如果设计使用87号油的发动机，您加91号以上的油，看看发动机有什么反应。

反之，也不成。设计使用高标号油的发动机，您加87号的油，会毁掉发动机。

这个村长就是卖油的危言耸听了吧, 我听人说,只是performance 不同而已, 或者说万一发动机出问题,厂家会以此为借口
在下有个车,厂家推荐用#91,我稀里糊涂一直用#87 (主要是头一次错用了,后来想起起来改用#91, 有时候别人加油不注意又用#87,后来干脆#87一用到底), 发动机没出过问题 也许时速达不到180KM (160 试过,轻松没问题)

 

[ccc]

这个村长就是卖油的危言耸听了吧, 我听人说,只是performance 不同而已, 或者说万一发动机出问题,厂家会以此为借口
在下有个车,厂家推荐用#91,我稀里糊涂一直用#87 (主要是头一次错用了,后来想起起来改用#91, 有时候别人加油不注意又用#87,后来干脆#87一用到底), 发动机没出过问题 也许时速达不到180KM (160 试过,轻松没问题)

又是您拍脑袋想出来的吧？

<TABLE class=Root cellSpacing=0 cellPadding=0 width="100%" border=0><TBODY><TR><TD class=Title>Gasoline Grades</TD></TR><TR><TD class=SpaceAuthorContent></TD></TR><TR><TD>Have you ever wondered, why there are three types of gas quality displayed on every gas station? And which one is the best suitable for your car, and why?

Gasoline Grades: The classification of gasoline is based on their "octane" ratings. They are graded as- Regular, Midgrade or Plus, and Premium.
Regular (87): Octane rating is greater than or equal to 85 and less than 88.
Midgrade/Plus (89): Octane rating is greater than or equal to 88 and less than or equal to 90.
Premium (92): Octane rating is greater than 90.

What is octane rating?
Octane rating is used to rate the volatility of gasoline. Lower the rating, easier it is for the gasoline to burn. It is based on the antiknock index, i.e. gasoline's ability to resist pre-ignition, or engine knock. Hence, higher the octane rating, lesser is the knocking.

Does it depends on the kind of car or automobile?
Yes!, most "powertrain control modules" have inbuilt adjustments for octane rating, for the most efficient burning of the air fuel mixture. Engine octane requirement is set by the engine design, which operates at optimum settings. Hence a higher octane will have no extra affect on it.
Once you pass the written test, you have to give a eye test their itself. You will then be issued a temporary permit. If you have never been licensed before, you may use this permit to practice driving with an accompanying adult, who is 25 years of age or older, with a valid state license. It is illegal for you to drive alone.
Now you might take classes from some Instructor. Once you are comfortable in driving, you can fix up an appointment over the phone, for the road test.

What should I use?
There is no advantage in using a higher octane fuel. Stick to the manufacturer's recommendation for fuel requirements, unless knocking occurs. If your engine knocks because of the conditions you encounter, use a higher octane fuel.
It is not true that higher the rating, better is the gas. You will be just throwing away your money for the higher octane fuel.

For most cars the right octane is "Regular".

Read your Car's manual, and use the recommended gasoline for normal operation of the vehicle.
</TD></TR></TBODY></TABLE>

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Origin of the 'Higher Octane is Better' Concept
Higher octane gasoline did reduce engine knock in older engines that used carburetors to regulate the air/gas mix. The older engines could not regulate the air/fuel mix going into the engine as efficiently as a computerized fuel injector. A carburetor in need of adjustment could cause too much fuel to be mixed with the air, which meant the gasoline would not burn completely. The excess gas soaked into carbon deposits and caused a premature ignition of the gasoline from the heat of the engine cylinder. The premature ignition made a sound that came to be known as 'engine knock.' When this happened, people would change to the higher octane/slower burning gasoline to resist the premature burn, thus minimizing the knock. Upping the octane was beneficial then, but engines and gasoline formulations changed.
Since the mid-1980s engines use fuel injectors with computers to accurately control the air/fuel mix over all temperature and environment ranges. The accuracy of the fuel injectors and computers is based on using the recommended gasoline for that engine. Most cars are designed to burn regular unleaded gas with an octane rating of 87. If the vehicle needs a higher octane rating this requirement is noted in the owner's manual and usually under the fuel gauge and by the gas tank.

Gasoline Factors That Matter
The quality of gasoline and the additive package usually affect the rate of engine wear more than the octane rating. Basically what this means is that it matters more where you buy your gas than which grade you purchase.

Regular Unleaded Gasoline
The recommended gasoline for most cars is regular 87 octane. One common misconception is that higher octane gasoline contains more cleaning additives than lower octane gas. All octane grades of all brands of gasoline contain engine cleaning detergent additives to protect against engine deposit build-up. In fact, using a gasoline with too high of an octane rating may cause damage to the emissions system.

Mid-Grade Gasoline
The octane ratings 'regular', 'mid-grade', and 'premium' are not consistent. In the United States, for example, one state may require a minimum octane rating of 92 for premium gasoline, while another may allow an octane rating of 90 to be premium. Check the octane rating on the yellow sticker on the gas pump rather than relying on descriptive labels.

Premium Gasoline
Certain high performance engines benefit from use of high octane fuel. For other engines, using a fuel with a higher octane rating than the vehicle requires sends unburned fuel into the emissions system and catalytic converter. This puts unecessary stress on the emissions system. For some vehicles, a rotten egg smell coming from the tailpipe signals use of too-high octane gas.

Leaded Gasoline
Many countries continue to use leaded gasoline, even though lead exposure has significant health and environmental consequences and the cost of switching to unleaded gasoline is relatively low. Although greatly improved, research indicates significant health and environmental effects from use of leaded gasoline remain even in countries that have switched to unleaded fuel.


Synthetic and Reformulated Fuels
Some major cities with air pollution problems require the use of reformulated gasoline. Reformulated gasoline is an oxygenated fuel that burns cleanly but can lower fuel economy and engine performance slightly. Reformulated gasoline may cause pinging or premature burn in engines with excessive carbon deposits. Older/dirtier engines may benefit from stepping up to the next grade of gasoline.<!--/gc-->

 

[viper99]

又是您拍脑袋想出来的吧？

<!--/gc-->

村长,这个还真不是拍脑袋想出来的
我许多事情都是懒得动脑筋,糊里糊涂就过去了, 买的新车也没注意看手册就挑便宜的加#87了,后来发现手册建议加#91, 也没说不能加#87,好在北美都是unleaded gasoline, 据说这个马虎不得

 

[ccc]

村长,这个还真不是拍脑袋想出来的
我许多事情都是懒得动脑筋,糊里糊涂就过去了, 买的新车也没注意看手册就挑便宜的加#87了,后来发现手册建议加#91, 也没说不能加#87,好在北美都是unleaded gasoline, 据说这个马虎不得

呵，想用leaded gasoline，您得专门进口自用。