91 or 93 isnt a premium fuel. its the same as 87, its simply made to have a longer burn.

99% of the time, the fuel quality is the same between 87 through 93 at the same station.

Very few gas stations have difference sources for their octane offerings.

 

Semantics. Here in CA 91 is labeled "Premium" at every gas station in the state.

All that matters is the knock resistance/longer burn of 91 vs 87 and has nothing to do with fuel quality between the two grades.

 

Of course. That's why I'm looking at ignition timing, which is adjusted to avoid knock. I used the word premium because that's how the gas pump labels it.

 

Yes, gas stations love to market higher octane as if its gold instead of bronze.


You have nothing to worry about as long as you use a gas station that stays busy. Those small town style gas stations dont always have the best quality, and tanks that dont get used up on a regular basis can become contaminated, moisture, or corrosion being the two biggest worries.

 

I originally was posting this as something funny because the guy doing the talking in this video is from Honda. He's in the passenger seat talking about the car. This section, he's talking about the CVT...at 2:15 he calls the Civic a Fisic... right?
2015 Honda Fit First Drive with Carl Pulley - YouTube

However... he also goes on to say that the 6spd M/T has a 5% wider range ratio range than the previous 5 spd M/T (See 3:25ish) Which seems to contradict the concerns of 6th gear having the same ratio as the 2013 5th gear.

However, I'm not sure if we trust a person who calls one of his company's cars by the wrong name...

 

It is true, the 6 speed has a 5% wider gear range than the outgoing 5 speed, but that extra 5% is on the short side of the gearing. The 6 speed has a shorter first gear than the 5 speed.

What most were expecting was that we would get roughly the same first 5 gears and a taller 6th. But instead we got a shorter 1rst (better for fast acceleration from a standstill), a closer ratios through the gears, (better for making the most of engine power under full acceleration) and the same ratio for 6th as was 5th in the 5 speed.

The new 6 speed gear box should perform better in instrumented acceleration tests and around a race track or autocross course. Both things the car magazines gush their approval of. In Japan the engine and transmission we got is called the RS. So you can see what the goal was for this engine/transmission combination.

 

Haha yeah thanks for playing.

BTW, we need not a 5% improvement, but something more drastic like 16% drop imho.

I suppose the Fit would look funny with 29" tall tires over 25" tall tires, which would achieve the same effect, but for all the gears.

 

Remember the EPA economy numbers are based on an average drive CYCLE.

Long distances with the cruise control the mpg's should go way beyond the EPA rating.

 

The average speed for the highway cycle is only 45 or 48 mph though.

 

where was that information given?

I thought average highway speed was 55mph

 

https://www.fueleconomy.gov/feg/fe_test_schedules.shtml

city 21.2, highway 48.3, "high speed" 48.4

In highway test, max acceleration is 3.2 mph/s which means 20.3 seconds to reach speed ...

 

"Beginning with 2008 models, three additional tests will be used to adjust the city and highway estimates to account for higher speeds, air conditioning use, and colder temperatures."

Up to 80mph! Like I said, not ideal long distance highway driving.

 

that is on a specific 11.04 mile test. maximum speed of 56.7mph



I dont think that is a good basis for anything average.