Gas Mileage Question

[shucker1]

Aviation Gas...

100 Low Lead but then you start melting spark plugs.

 

[MotorCityFats13]

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Pretty simplified, but the way I understand it, the higher the octane, the more you can compress without it detonating. The air fuel mix will detonate without spark under high enough compression, its how a diesel works. If you are running high compression or forcing more air in you need higher octane. If not its a waste of money but it wont hurt anything. The tighter you squish that mixture (or squish in more air) before you make it pop, the more of a boom you get. They muck with the timing on the ecoboost to avoid this issue with the turbos. That's why if you screw with the SW on those things you can relay make them sing. That's also why most custom daily driver turbos only run around 8:1 compression. Now if only there were some cheap way to up octane ratings, we could run 12:1 on all our vehicles and really rip... without dying of lead poisoning that is.

there is..... tune for E85 lol

 

[Tech By Trade]

Better off to build for E85, if its available. Poor mans race fuel. We don't have enough corn farmers that need to be subsidized, so we don't have access. My guess is the fellow from the middle east doesn't have access either.

 

[tripplec]

Time to dump E altogether in gas. Its a rip off and kills the overall gas MPG with it in it.

 

[katsov]

I have a superchips flash tuner using the gas saver tune. I average 15-16 city and 21-23 highway. It's only available for the V6 for our gen.

 

[Beachcomber86]

Better off to build for E85, if its available. Poor mans race fuel. We don't have enough corn farmers that need to be subsidized, so we don't have access. My guess is the fellow from the middle east doesn't have access either.

Wrong. Corn should be used for frosted flakes and bourbon. No reason to add it to gas!

 

[MotorCityFats13]

Wrong. Corn should be used for frosted flakes and bourbon. No reason to add it to gas!

what they should do is make the alcohol with something other than corn something we have no use for and its a waste of time..... I vote for maple syrup ......

 

[geosnooker2000]

The new ones get better mileage with the ecoboost if you keep your foot off the pedal. As soon as you lay into it and the turbo's wind up, it drops to about the same. That's why all the ecoboost F150 owners ***** about mileage when they put their trucks to work. And at the higher RPM of the smaller CI, its more wear and tear. Though the ecoboost is build much more stout, like a diesel. It takes a certain amount of energy to move a large mass, and though the ecoboost is more efficient, you can only get so much energy from a fixed amount of gasoline. And these things are heavy pigs with the aerodynamics of a brick. The V8 gets ballpark the same mileage as the 6, better if towing, but they do have an extra gear.

It also has to do with the fact that the 5th gens are transverse mounted engines. You lose a lot of energy turning torsional power 90 degrees.

 

[Tech By Trade]

what they should do is make the alcohol with something other than corn something we have no use for and its a waste of time..... I vote for maple syrup ......

lol, how will you subsidize all those farmers, and what will you do with all that corn, you guys can't really drink that much JD. I'm all for the maple syrup though, Quebec really isn't a part of Canada anyway.