Waste vegetable oil fuel systems have been around for a while, but they are becoming more common and are no longer just a novelty but actually a viable option. Using waste vegetable oil fuel offers many benefits, and one of the biggest is the fact that this fuel is usually free. Fast food restaurants in the USA alone throw out more than ten million tons of waste vegetable oil every single year, and this refuse can be had for no cost usually. Waste vegetable oil conversion is not ideal for all cars though, only diesels. Experts in this area recommend older models, especially those made by VW and Mercedes. Newer diesel vehicles are harder to convert due to the computer components and other technology advances. A lot of people believe that waste vegetable oil fuel systems means stopping at a restaurant, filling up the tank, and driving, but this is not the case. WVO must be filtered thoroughly, and that is not the only thing that needs to be done. The acidity of the oil mus be determined, because many times the acidity is too high and can cause corrosion and mechanical problems. Waste vegetable oil conversion can be cleaner for the environment, but that does not mean these vehicles do not need repairs or that they run great all of the time. Clean filtered waste vegetable oil fuel that is the right pH will go a long way towards preventing big problems though, and eliminate the need for frequent repairs due to excessive wear and corrosion. WVO can be hard on rubber gaskets and hoses, and it is recommended that these are replaced with more resistant materials instead.

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