Nothing. Simply fill your diesel fuel tank with biodiesel and drive away. If you plan on switching over to pure biodiesel it is important to understand its properties ("Concerns"). To prevent any problems before they occur, ensure that only fuel meeting the biodiesel ASTM specification is used. Based on user experience, no vehicle modifications appear to be necessary for blends of biodiesel as high as 20% biodiesel mixed with diesel fuel.

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. See similar questions...

Many major engine manufacturers have made formal statements that the use of biodiesel blends under 20 percent will not void their warranty. For biodiesel blends over 20 percent, it is necessary to check with the manufacturer to see if there are any issues regarding their warranty. See similar questions...

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. See similar questions...

How long does a diesel engine/car typically last? (an 80's gas car would generally be on its last legs, but this doesn't seem to be so for a diesel) See similar questions...

Not if you are using blends of B20 or less. The specifications for biodiesel have been established so that it can be used in any diesel engine. Some modifications may be desirable with higher biodiesel concentrations. Consult your equipment manufacturer before using higher biodiesel blends. See similar questions...

First, the quality of the biodiesel/glycerine separation. Second, doing a simple "miscibility" test your biodiesel with an equal amount of water in a jar. Thirdly by testing the pH of the fuel. See similar questions...

Biodiesel blends can be used in any internal combustion diesel engine with no special modifications or extra machinery. There is one minor issue when using B100. Since B100 can degrade certain kinds of elastomers in some engines, the rubber fuel hoses and fuel pump seals need to be replaced with compatible elastomers. See similar questions...

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). See similar questions...

No, Biodiesel has a higher lubricity than petroleum diesel and actually extends the life of your engine. No, this is a misconception that has been highly publicized but refers to a few studies funded by big oil companies. The way these studies were able to reach their conclusions was by ignoring the primary product of the grain crusher. The primary product from crushing soybeans is the meal, not the soy oil used for Biodiesel production. See similar questions...

NO! You cannot burn it in a gasoline engine, it is a Diesel Fuel substitute & can only be ran in a compression based Diesel Engine. BioDiesel cannot be spark ignited. Absolutely not, BioDiesel is made in a chemical conversion process where vegetable oil, alcohol are chemically bonded under heat using lye as a catalyst. This chemical conversion process is called "Transesterification. See similar questions...

First, you need to have a diesel engine. Any engine that runs on diesel #2 will run on biodiesel. Other than having a diesel engine, there is nothing you need to do specifically to convert your car to biodiesel. For pre-1994 vehicles, it is often said that you need to replace your rubber hoses with synthetic ones, but that is not necessary unless you have a leak. See similar questions...

Pure biodiesel contains 5-8% less energy per gallon than petroleum diesel. Blended fuels obviously will have less of an energy loss. Some literature does indicate that other factors such as more efficient burning and better injection efficiency due to higher viscosities may counteract this energy loss. In any event, users might notice a slight power loss with biodiesel fuels. See similar questions...

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. See similar questions...

No. I have found the gasket is just a source of problems later. They always seem to get a whole in it which causes an air leak and resulting engine adjustment problems. I just clean the surface of the exhaust flanges and as long as they are flat then it should not leak. None of mine have. Another alternative that I have not tried is to use epoxy as a gasket material. See similar questions...

Officially, nearly all manufacturers agree that biodiesel up to B5 (5% biodiesel, 95% petrodiesel) works in all diesel engines. Unofficially, millions of miles of experience show that B99 works just fine in nearly all diesel engines. There have been reports that the Ford 6.0 L engine, for example, doesn't run well on biodiesel - a problem with the lift pump -- but most engines run better on biodiesel than on petrodiesel. See similar questions...