Would 93 Octane gasoline grade give me a better mileage than 87 Regular? Why?
605464
Probably not.  Octane rating is a measurement of its antiknock ability.  High compression engines tend to prematurely ignite gasoline in the engine and require more antiknock compounds than other engines.  Therefore, they require a higher octane rating.  All modern engines do not require the higher octane rating and do not receive any benefit, environmental or otherwise, from using gasoline which is of a higher octane rating.  In fact, using a gasoline with a higher octane rating than the engine is designed for can damage the engine.  So, if you have a relatively new car (less than 10 years old) use the 87 octane gasoline and leave the expensive high octane gas for those poor souls whose engines require it.  You will get better performance and better engine life from regular gas.
352778
It actually is. GM is spending millions on the Live Green Go Yellow campaign which features Flex Fuel GM vehicles that can take both E85 and regular gasoline. Although E85 is cheaper than regular gas, there are still supply shortages due to the fact that it has to be grown, processed, and transported from the Midwest\n\nAnd here is a news link from IBD
151091
If you want accelleration you get a higher number gear ratio but it will cruise at a higher rpm on the highway. It will be quicker off the line, but not faster on the highway.\nIf you want a higher top speed you have to use a lower number like 2.19...
607432
While increasing flow of fuel u r increasing the speed of the driver unit (eg. increasing the speed of diesle engine which drives the alternator) bu thus more RPM and more power (however it will not increase more than the rating)
550246
Ethanol increases the Octane rating of a fuel without the problems of some of the other things they put in to do so (tetra-ethyl lead or its various carcenogenic replacements) as well as being grown in the country where it is being sold (instead of shipped from countries which provide funding for terrorists).\n\nEthanol also tends to burn a bit cleaner than most of the other stuff in petrol although it does reduce fuel economy slightly.
251233
The RX-7 has issues with it's apex seal. So you will have to rebuild it within 100K mile increments.\n\nPersonally, if money was an issue, I would get a 95-98 240SX. They are inexpensive, extremely reliable, and lighter. Also, the number of mods you can do to a 240SX is incredible.\n\nA garage out here, tigerracing.org, will give you 430 HP TO THE WHEELS, with a 6 speed tranny, for only 8K. That would give you a HP to weight ratio of about 4.2 pounds per HP. That's ridiculous performance. Compare it to these cars:\n\nViper             7.4:1\nFerrari F355 F1   7.9:1\nShelby Series 1   8.3:1\nCorvette          9.4:1\nPorsche Carrera   9.6:1\nFord Escort       22.5:1
158466
The '02 will win. It's just a better, more powerful version of the car, with superior stiffening of the same basic Fox-body platform. The '90 will torque off the line a little better (nothing really beats cubic inches off the line), but the '02 will power past it.
1071959
No, as a former truck driver I know that slowing down saves gas, I gained 1 mile per gallon by slowing down 7 miles per hour, just think if everybody did that, I know they would find another way to keep the prices high, but the point is it would help to go 55, it also makes a difference on driver fatigue and how 4 wheelers interact with you.
92238
I know what you mean; the problem is there is such a variety of accessories for a diesel that changes the efficiencies.  Direct injected common-rail engines with turbochargers and intercoolers are usually more efficient than indirect-injected turbo-charged engines.  \n\nGasoline engines typically are rated at about 8%-10% efficiency, while diesels roughly are 11%-13% efficient.  It is all anecdotal evidence from many articles.  Nobody really has a good number because of variances of construction, etc.  Diesel also has a higher heating value per gallon than gasoline, so that accounts for some of the higher efficiency.
829808
Sans Plomb\n**********************\nGasoline -- Known in France as essence, gas is expensive for those accustomed to North American prices. All but the least expensive cars usually require an octane rating that the French classify as essence super, the most expensive variety. Depending on your car, you'll need either leaded (avec plomb) or unleaded (sans plomb).\n\nBeware the mixture of gasoline and oil called mélange or gasoil sold in some rural communities; this mixture is for very old two-cycle engines.\n\nNote: Sometimes you can drive for miles in rural France without encountering a gas station; don't let your tank get dangerously low.
191827
Tibruon, is not really that good if you get the I-4 engine, however if you get the V6 will be better.  it is not because it has more power, it just more stable on the engine and doesn't break down that fast compare with the I-4.
171830
.445 per mile is the federal guideline.  It was increased in response to the increase in fuel prices.  You may want to try to collaborate with a local gas station and see if you can get gift cards for gas at a slightly lower rate.  For example, we work with Shell and they sell us a $15.00 card for $11.50 each.  When employees submit an expense report they are required to "bank" their milage in increments of $15.00 (15, 30, 45, etc.). It is not much of a savings, however it IS a savings:)
786406
No. It just wastes more gas, builds up carbon deposits in the cylinders quicker, and tends to make the engine an oil burner.  There are many possible reasons why his is faster, but worse than optimum combustion isn't one of them.
501724
Converting Gasoline into Propane so all USA Vehicles could get 50 + MPG! But, the Clinton/Gore EPA-OBD II Law that applies to Your Vehicle is Stopping Me! Want to Know More? Go to http://energy21.freeservers.com/bookrep.html
559741
A divorce and a 2006 Toyota hybrid highlander limited"black"and i don't have to worry about gas i get anywhere between 32 and 38 MPG in a 7 passenger SUV it is the best.Thanks for reminding me! GOOD LUCK TO YOU!
632382
Carbon rating is similar to Octane number.  Octane Number = Carbon rating of a gases quality / 100.  (The octane rating of gasoline tells you how much the fuel can be compressed before it spontaneously ignites. When gas ignites by compression or a spark source, and the bonds inbetween the hydrocarbons are broken, a certain amount of energy is released. The more bonds in the hydrocarbon chain that can be broken in this combustion event, the higher the carbon rating and the more bang for your buck.) Out of 100% of combusting gasoline fuel for example, 0% heptane is a very poor source of energy and pumps wouldn't dare try to sell it as useable fuel. While a rating of 86, 87, 88 / 100 is pretty good, hence the rating at the pump. \n\nSo, I guess you can think of the carbon rating of a fuel as the percent efficiency of that fuel during 100% combustion.
762332
Sans Plomb is your Radio Trivia Answer\n\nGasoline -- Known in France as essence, gas is expensive for those accustomed to North American prices. All but the least expensive cars usually require an octane rating that the French classify as essence super, the most expensive variety. Depending on your car, you'll need either leaded (avec plomb) or unleaded (sans plomb).\nhttp://www.frommers.com/destinations/print-narrative.cfm?destID=223&catID=0223030862