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.

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.

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.

If I use biodiesel, will it harm my car to go back to petrodiesel? (e.g. in an area where biodiesel isn't available)

Biodiesel produces vastly less emissions than petroleum diesel. We think everyone should use it. Using biodiesel just once to pass DEQ is not only wrong, it's probably illegal. If your vehicle can't pass DEQ, you should switch to biodiesel permanently or retire that vehicle.

Any diesel engine can operate on Biodiesel with no modification to the engine. Older vehicles often must have their fuel lines changed from natural rubber to synthetic rubber hoses. Using B20 (a blend of 20% biodiesel and 80% petroleum diesel) requires no precautions before use. If you want to use a blend higher than B20, such as B99.9, you will need to be aware of a few precautions before proceding. B100 is compatible will ALL diesel engines as long a few precautions are taken.

We have seen a few occurrences where Biodiesel has actually been cheaper and the prices are continuing to get closer and closer together. That being said unless specific governmental regulation prohibiting petrol-diesel sales, or requiring Biodiesel sales is enacted Biodiesel will always stay slightly more expensive that petrol-diesel. Biodiesel is a direct substitute that is a higher quality product. It is a higher quality product because it produces significantly less environmental impacts.

Scientific research confirms that Biodiesel exhaust has a less harmful impact on human health than petroleum diesel fuel. Biodiesel emissions have decreased levels of polycyclic aromatic hydrocarbons (PAH) and nitrited PAH compounds that have been identified as potential cancer causing compounds. Test results indicate PAH compounds were reduced by 75 to 85 percent, with the exception of benzo(a)anthracene, which was reduced by roughly 50 percent.

LPG compared to petrol and diesel is approximately 70% cleaner over CO2, HC. Particulates are not prevalent in LPG.

Biodiesel is a clean burning alternative fuel produced from vegetable oils and animal fats through a chemical reaction and meeting ASTM D 6751. Biodiesel contains no petroleum, but it can be blended at any level with heating oil. It can be used in home heating oil systems safely with no modifications to the fuel tanks, pumps or burners in concentrations up to 20% biodiesel with only minimal precautions (see conditions for use section).

Research studies have proven that properly maintained propane engines produce significantly fewer carbon monoxide, hydrocarbon, particulate matter and nitrogen oxide emissions than gasoline- or diesel-fueled forklifts.

Most major diesel vehicle manufacturers have already acknowledged that biodiesel will not void your warranty. Check with your dealer or diesel mechanic for further details. In the UK a 5% blend will not effect any diesel warranties.

Burning BioDiesel that meets the ASTM D-6751 specification in your vehicle is safe. There have been well over 45 million miles of real-world driving with B20 blends in a wide variety of engines, climates, and applications. Our belief is if you are careful & follow the common sense guidelines spelled out in our book, you can make BioDiesel which can meet or come very close to the ASTM D-6751 specification.

Because maximum power production from diesel engines is fuel and not air limited it is still the only engine that is "lean burn" across the full power/speed range. This brings real fuel and carbon dioxide emission savings - good for the global environment. But it challenges the catalyst chemist to control nitrogen oxide and particulate emissions at low exhaust temperatures with excess oxygen.