by Subjectivist » Fri 19 Sep 2014, 17:57:32
$this->bbcode_second_pass_quote('Quinny', 'O')ur local supermarket has recently started selling Ethanol fuel - E85. It cost 79.9 cents as opposed to 1.51. I know it's no panacea, just looking to save money. I'm not happy with the use of agricultural products to produce fuel, but can't afford to not save money.
It's supposed to be 30% less efficient than normal fuel.
I've started trying to 'wean' my car onto it and started with 25% e85 75% petrol now 75% E85 25% petrol. Haven't seen any noticeable problems yet and haven't changed anything on car which is a Mitsubishi.
Thought I'd share experience as I'm saving quite a bit of money and also ask for any practical advice. Don't really want to delve into political correctness or it's appropriateness as a transition technology, just wondered if it can screw my car up and also if it's available in other parts of the world?
From Wikipedia, $this->bbcode_second_pass_quote('', 'F')uel economy
In theory, all fuel-driven vehicles have a fuel economy (measured as miles per US gallon, or liters per 100 km) that is directly proportional to the fuel's energy content.[55] In reality, there are many other variables that come into play that affect the performance of a particular fuel in a particular engine. Ethanol contains approx. 34% less energy per unit volume than gasoline, and therefore in theory, burning pure ethanol in a vehicle reduces miles per US gallon 34%, given the same fuel economy, compared to burning pure gasoline. Since ethanol has a higher octane rating, the engine can be made more efficient by raising its compression ratio. In fact, using a variable turbocharger, the compression ratio can be optimized for the fuel, making fuel economy almost constant for any blend.[26][27] For E10 (10% ethanol and 90% gasoline), the effect is small (~3%) when compared to conventional gasoline,[56] and even smaller (1–2%) when compared to oxygenated and reformulated blends.[57] For E85 (85% ethanol), the effect becomes significant. E85 produces lower mileage than gasoline, and requires more frequent refueling. Actual performance may vary depending on the vehicle. Based on EPA tests for all 2006 E85 models, the average fuel economy for E85 vehicles resulted 25.56% lower than unleaded gasoline.[58] The EPA-rated mileage of current USA flex-fuel vehicles[59] should be considered when making price comparisons, but E85 is a high performance fuel, with an octane rating of about 94–96, and should be compared to premium.[60] In one estimate[61] the US retail price for E85 ethanol is 2.62 US dollar per gallon or 3.71-dollar corrected for energy equivalency compared to a gallon of gasoline priced at 3.03-dollar. Brazilian cane ethanol (100%) is priced at 3.88-dollar against 4.91-dollar for E25 (as July 2007).