Highest MPG for Non-Hybrids?

There is a contradiction being promoted here: that my car is
designed for 87 octane gas only, and that it has knock sensors in case I
use gas below 87 octane - below Regular grade. Perhaps Honda doesn't
respect American gasoline? BTW, my Civic Si also did better power-wise
on midgrade (but with worse fuel economy), and IIRC it noted that higher
octane gas was preferred in the manual.

 

Not quite. It is possible to have gas that's nominally 87, but is
contaminated, of substandard quality or has degraded with age.

In any case, the primary purpose of the knock sensor is EMISSIONS, not
engine damage. Protection against engine damage does allow the computer to
advance the timing as far as it can without risking detonation, but it can
only go up to its designed-in limits, which are configured for 87 octane.

 

not necessarily true. the more advanced, the more NOx because
combustion temp is higher. but the trade is better fuel economy and/or
power. thus, in an ideal world, you want the ignition as advanced as
possible for any given day, and the only way to determine the max limit
is to use knock detection.

modern ignition timing algorithms, for want of a better word, are highly
advanced.

http://www.google.com/patents?id=DtobAAAAEBAJ&dq=5,038,736

 

<rimshot>

Thank you, thank you. He's here all week, folks.

 

You're absolutely correct.

But even very slight knocking that would cause no damage to the engine
will dramatically increase NO emissions. Knock sensors, once rare,
became ubiquitous as part of the OBD-II emissions management system.

Bedtime reading, anyone? I was fine until I got to the flowcharts. :^(

 

Is there an intermission? I'm out of popcorn.

 

Anyone driving a coupe or sedan that gets less than 35 mpg is a leach
on society.

 

You are so ridiculous...

Why 35mpg and not 55mpg?
Because your junky honda happens to be just over 35 line?

I drive 2004 honda accord coupe...
In what way am I a leach on society more than you are?

At least I am not cheating Carfax to get my fee back...

 

Because 35 is easily obtained today.

You have not seen my Honda.

It was written partly tongue in cheek, as a partial response to by
someone else that this is about what God intended. ;-)

? You have the wrong person.

 

Then why aren't you on a scooter that gets 65mpg?

Oh, I see--YOU get to set the qualifications for what KIND of car people
should be driving, and--interestingly enough--that would be YOUR car.

Nothing more, nothing less.

Go ahead, put your money where your mouth is--buy a scooter and quit
being a "leach" (sweetheart, you meant "leech") on society.

 

wrote in :

I disagree, since I pay full retail dollar for every ounce of fuel I use.
Nobody's giving me the gas at their expense.

 

Oh, I see--YOU get to set

I am not setting anything.

 

I meant that excessive use of oil promotes war and environmental
problems.

 

Then move out from the city and live in a cave in the mountains!

 

Easier is very relative term... Easier maybe for you bot not for everybody.

I see...

My appologies in this case.

 

It is an easy matter to buy a coupe or sedan that gets 35 mpg or more.
We disagree.

 

I do not see how your answer reduces oil use.

 

why are you bothering with this guy? you'd get more sense from an
a.l.i.c.e. bot.

 

http://www.pandorabots.com/pandora/talk?botid=f5d922d97e345aa1

 

Not that I necessarily agree with the 'leech' comment, but you
aren't paying the full cost of gasoline. If all environmental costs were
added in, *you'd* be driving that 65mpg scooter, because you wouldn't be
able to afford gas for anything else...