Biodiesel and the bug

Now biodiesel is a reality for all boat owners, Alex Blackwell explains what’s actually in it and how we can tackle diesel bug

In the 2020 Budget, the Chancellor announced that privately owned boats and yachts will have to use white diesel instead of the cheaper red diesel. When we’re back on the water, slowly diluting the variously coloured fuel we still have in our tanks, it’s worth taking a look at what it is we’ll be purchasing. All white diesel now contains a percentage of biodiesel – usually around 5-7%. Pumps marked B7 have 7% biodiesel and 93% petroleum diesel or petrodiesel. What is biodiesel? Biodiesel refers to a vegetable oil – or animal fat-based diesel fuel – consisting of long-chain alkyl (methyl, ethyl, or propyl) esters. Biodiesel is typically made by chemically reacting lipids such as vegetable oil, soybean oil and animal fat (tallow) with an alcohol (methanol), to produce fatty…

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Practical Boat Owner (Digital) - 1 Issue, August 2020

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