w*****s
发帖数: 438 | 1 请问大家，新车manual上写的recommend premium unleaded，but 87octane or above
won't affect engine reliability。那我加regular也可以喽？
另外还有写不要有MMT的油，要有deposit control gasoline的油，晕了。该去哪个加
油站加这样的油呢？网上查也查不到。
谢了！ |
l***n
发帖数: 1270 | |
w*****s
发帖数: 438 | 3
去哪个油站呢？不能随便找一个吧，附近的都是比较小的加油站。
【在 l***n 的大作中提到】
: 直接91
|
l***n
发帖数: 1270 | |
m****i
发帖数: 4452 | |
o********s
发帖数: 971 | |
y***n
发帖数: 4103 | |
T*U
发帖数: 22634 | |
|
i****x
发帖数: 17565 | 9 if manual says 87 ok 91 recommended, 87 won't hurt the car in any way. the
only downside is horsepower will be slightly down. so if you only go grocery
and work I suggest 87 for lower price. if you enjoy sporty driving and don'
t care about price go 91.
warning -- no matter which you go, don't frequently switch over and over.
that'll confuse the computer and hurt your car. |
w*****s
发帖数: 438 | 10 Thanks a lot, very helpful!
grocery
don'
【在 i****x 的大作中提到】
: if manual says 87 ok 91 recommended, 87 won't hurt the car in any way. the
: only downside is horsepower will be slightly down. so if you only go grocery
: and work I suggest 87 for lower price. if you enjoy sporty driving and don'
: t care about price go 91.
: warning -- no matter which you go, don't frequently switch over and over.
: that'll confuse the computer and hurt your car.
|
|
|
l*****g
发帖数: 556 | 11 Not sure.
My high school chemistry is rusting.
Does 87 had more energy than 91? My fading memory was: the better the gas,
the shorter the Carbon-carbon chain on average. Shorter carbon-carbon chain
lead to less energy to break these C-C bonds.
grocery
don'
【在 i****x 的大作中提到】
: if manual says 87 ok 91 recommended, 87 won't hurt the car in any way. the
: only downside is horsepower will be slightly down. so if you only go grocery
: and work I suggest 87 for lower price. if you enjoy sporty driving and don'
: t care about price go 91.
: warning -- no matter which you go, don't frequently switch over and over.
: that'll confuse the computer and hurt your car.
|
T*U
发帖数: 22634 | 12 did you graduate from high school?
,
chain
【在 l*****g 的大作中提到】
: Not sure.
: My high school chemistry is rusting.
: Does 87 had more energy than 91? My fading memory was: the better the gas,
: the shorter the Carbon-carbon chain on average. Shorter carbon-carbon chain
: lead to less energy to break these C-C bonds.
:
: grocery
: don'
|
l*****g
发帖数: 556 | 13 Barely.
My PhD training are fading a lot as well. It almost reduce to one point:
always read / judge by your own.
here is wikipedia link:
http://en.wikipedia.org/wiki/Gasoline
"A high octane rated fuel, such as liquefied petroleum gas (LPG), has a
lower energy content than lower octane rated gasoline[citation needed],
resulting in an overall lower power output at the regular compression ratio
of an engine run at on gasoline. However, with an engine tuned to the use of
LPG (i.e. via higher compression ratios, such as 12:1 instead of 8:1), this
lower power output can be overcome. This is because higher-octane fuels
allow for a higher compression ratio hence a higher cylinder temperature,
which improves efficiency. "
【在 T*U 的大作中提到】
: did you graduate from high school?
:
: ,
: chain
|
T*U
发帖数: 22634 | 14 do you know the diff between LPG and gasoline?
Octane rating of Alcohol is very high as well. you can't give a conclusion
based on comparing high octane rating of LPG and low octane of gasoline.
There are two variations.
ratio
of
this
【在 l*****g 的大作中提到】
: Barely.
: My PhD training are fading a lot as well. It almost reduce to one point:
: always read / judge by your own.
: here is wikipedia link:
: http://en.wikipedia.org/wiki/Gasoline
: "A high octane rated fuel, such as liquefied petroleum gas (LPG), has a
: lower energy content than lower octane rated gasoline[citation needed],
: resulting in an overall lower power output at the regular compression ratio
: of an engine run at on gasoline. However, with an engine tuned to the use of
: LPG (i.e. via higher compression ratios, such as 12:1 instead of 8:1), this
|
g*q
发帖数: 26623 | 15 手册推荐91就加91.
一般手册推荐91允许87的话,用87的时候会调整点火时间,影响油耗和performance. |
i****x
发帖数: 17565 | 16 87比91号油能量是要多的，因为91多加了防爆剂，防爆剂能量密度低于汽油本身。但是
这个差异几乎可以忽略不计。
很多人以为91号汽油能增加车的mpg是因为能量高，其实是错误的。高号汽油防爆性能
高，可以实现更高的压缩比而不会爆燃，因此高性能发动机通常要求高号汽油，用来实
现高压缩比。这些高性能发动机如果加入普通汽油，会自动识别而降低压缩比，所以效
率也会有所下降。这只适用于高性能发动机。设计来烧普通汽油的发动机本身压缩比就
不高，加什么汽油燃烧效率都不变，所以加91号油也不会给你带来好处。
,
chain
【在 l*****g 的大作中提到】
: Not sure.
: My high school chemistry is rusting.
: Does 87 had more energy than 91? My fading memory was: the better the gas,
: the shorter the Carbon-carbon chain on average. Shorter carbon-carbon chain
: lead to less energy to break these C-C bonds.
:
: grocery
: don'
|
