Emissions results do vary between engines and test equipment, but in our tests on an early 80's VW turbodiesel, opacity (which is used as an indicator of particulate emissions) was reduced by about 50%, compared to premium diesel fuel. Other EPA regulated emissions were about the same for all the fuels tested. Power was equal to premium diesel that test. We find no difference power while driving, between diesel and SVO/WVO, as long as the filter is clean and the SVO is heated.

Yes, possibly more due to its superior cetane rating. Biodiesel does contain 5% fewer BTUs per gallon than petroleum diesel, but burns more completely than petroleum diesel. Therefore, you get more energy from the fuel with less pollution. Partially burned fuel creates waste and more air pollution.

Yes. Biodiesel contains 7% fewer BTUs per gallon than petroleum diesel, which is practically unnoticeable in on-road use.

Many people claim that Biodiesel will increase your fuel economy by 5%. It is possible that this is true due to higher lubricity and a higher BTU content than #1 Diesel fuel. We have no data to back these claims. Generally speaking Biodiesel offers you the same power, consumption, horsepower, torque, and hauling rates as conventional diesel only with far less environmental consequences.

Studies vary. Some laboratory research indicates slight increases in NOx by running biodiesel. Others find NOx neutral. Some claim that in "real-world driving conditions," NOx is decreased. Read more about our take on the NOx issue. Possibly. Anything in concentration can damage the environment. It is non-toxic and biodiegradable and it will generally degrade in the soil within 30 days from the time its spill, but the bottom line is: Don't spill it.

EPA estimates are based on laboratory tests conducted by manufacturers according to federal regulations. EPA re-tests about 10% of vehicle models to confirm manufacturer's results. For more detailed information, visit our page on How Vehicles Are Tested.

If your fuel economy is excessively low, your vehicle may need to be serviced or repaired. You may want to contact your dealer or a reputable repair facility to check your vehicle.

That depends on how big a cliff you push it off of! Seriously, it varies quite a bit, depending on speed, wind, and fuel type. We can depend on a solid 18 liters/100 kilometers (13 miles/gallon) over long Interstate highways at 100 k/h (65 m/h). We've calculated as good as 16 l/100km (15 m/g) at highway speeds with a nice tail wind. Biodiesel seems to be slightly less, straight vegetable oil (SVO) seems to be slightly more.

Biodiesel is the only alternative fuel to have fully completed the health effects testing requirements of the Clean Air Act. The use of biodiesel in a conventional diesel engine results in substantial reduction of unburned hydrocarbons, carbon monoxide, and particulate matter compared to emissions from diesel fuel. In addition, the exhaust emissions of sulfur oxides and sulfates (major components of acid rain) from biodiesel are essentially eliminated compared to diesel.

Ans :Biodiesel can be used as a pure fuel or blended with petroleum in any percentage. B20 (a blend of 20%) by volume biodiesel with 80% by volume petroleum diesel) has demonstrated significant environmental benefits with a minimum increase in cost for fleet operations and other consumers.

You have to ask??? Seriously, the more "stock" the engine is, the better the mpg. You could get 14-18 mpg out of a low horsepower 390, but with 550 bhp, you'll probably get 8 mpg. If you want the best reliability, stick with a stock engine. Unless you throw a lot of money at an engine, higher horsepower will always result in higher maintenance.

No test can accurately predict fuel economy for all drivers and all driving conditions. Driver behavior, driving conditions, vehicle maintenance, fuel characteristics, weather, and other factors can all affect fuel economy significantly as explained here.

NO. Biodiesel is the term for the pure biodiesel, B100. Bioheat® fuel is conventional heating oil containing biodiesel. NO. Biodiesel is produced from raw vegetable oils or animal fats, but the oil or fat must go through the chemical reaction (called transesterification) to make it into biodiesel and be tested to make sure it meets D 6751 before it is blended with heating oil.

Under typical operating conditions there should be no noticeable impact on the overall power of the vehicle. The reduction in energy content in ULSD could result in reduced fuel economy by some estimates of about 1%, which is within normal variability of diesel fuel.