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Fuel legislation
For reasons explained later, biodiesel and blends of diesel
containing biodiesel are more prone to contamination from water
and solid particulate. This potential contamination, if not properly
managed, poses problems for users and operators of diesel
engines – especially those with high pressure common rail injection
systems. To avoid engine and fuel system damage, stored fuel
needs to be kept ‘clean and dry’.
The current UK diesel or gas oil specifications are:
BS EN 590:2009 – Road diesel, as available from nationwide
forecourts. Un-dyed with up to 7% bio-content.
BS 2869:2006 Class A2 – Gas oil for NRMM. Up to 7%
biodiesel content and with red excise marker added.
BS 2869:2006 Class D – Middle Distillate gas oil for stationary
engines. Up to 7% biodiesel content and red excise marker.
BS ISO 8217 – Marine Gas Oil for sea going vessels. No biocontent permissible.
Copies of these fuel specifications may be found in Appendix 1.
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