Currently diesel contains 5% biodiesel. The limiting factor is the viscosity of biodiesel at low temperatures.

At 25 deg C 25% biodiesel/diesel would have the same viscosity as as 5% biodiesel/diesel at -10 deg C.

Therefore the proportion of biodiesel could be 5% in Winter, 15% spring/autumn and 25% during the summer.

It is normal for ordinary diesel to be sold without winter additive during the summer months so it should be no problem to change the biodiesel/diesel blend.

Why is this idea important?

  • To reduce greenhouse emissions.
  • To reduce pollution.
  • To reduce our reliance on imported carbon fuels.

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