Union Says Fuel Filter Blocking Must be Addressed Once and For All

NFU Scotland has said more must be done to urgently address fuel filter blocking as issues begin to emerge again across the UK.

Once again, farmers are facing filter blocking problems linked to fuel with no sign of recompense or solutions to the issue since it was first raised in October 2019.

The specification and standards of fuel are being cited as the problem, but the introduction of improvements to fuel specifications have been too slow, and farmers are still being left with the cost of repair, new filter replacements and vehicle down-time.

When this problem first emerged 18 months ago, the Union received more than 400 reports of filter blocking from across Scotland, costing some individuals thousands of pounds in repair and replacement of parts and fuel treatments.  

The Union was quick in raising this issue with UK and Scottish Governments.  Joint lobbying work between NFUS and NFU saw the Department of Transport and British Standards Institution (BSI) set up a Taskforce, in which UK farming unions still participate, to assess and resolve the problems.  

However, progress through the taskforce has been painfully slow and almost two years on, there has been no overarching solution while the problems of fuel filter blockages continue to impact farmers and crofters throughout Scotland and the rest of the UK.

Jamie Smart, NFU Scotland’s Transport Advisor and representative on the Taskforce, said: “Urgent and focused action must be taken to address filter blocking.

“The Taskforce has had some small wins regarding changes to fuel specifications but getting those changes into the fuel supply chain have been delayed.

“Testing of fuel samples has shown that most fuels reach current standards, however given that some fuel is still blocking filters and causing vehicle breakdowns. it is simply not fit for purpose.

“As a result, fuel filter blockages in tractors and motorised farm machinery remain a regular and costly problem for many Scottish farmers and crofters.

“If members are having problems, I urge them to check the fuel filter hub that NFU Scotland has created on its website for members.  You can also get in touch with your Regional Manager or NFU Scotland’s Agricultural Vehicle Helpline to report it.”  

Vice President Robin Traquair added: “The continued problems related to filter blocking are unacceptable.  As farmers and crofters, we are purchasing fuel from reputable suppliers and we need that fuel to be reliable for our businesses, so we can continue to put food on the nation’s table.

“The filter blocking issues have meant that some filters are lasting for a tiny proportion of their intended use.  The cost of repair, down time, and replacement parts are being shouldered solely by the users.

“It isn’t the responsibility of farmers to ensure fuel is fit for purpose, but it is the situation we keep finding ourselves in.  It’s up to BSI and the fuel chain to push forward with the specification changes to ensure the fuel is fit for purpose and filter blocking problems are resolved once and for all.”

Notes for editors

  • Those impacted by filter blocking are urged to contact their NFU Scotland Regional Manager so we can collate evidence.
  • NFUS members are entitled to a 20-minute free advice call on all issues relating to vehicles via the Transport Helpline.  Please call Jamie Smart on 07733 136 424 or email: to access help.  Please have your membership number to hand.
  • Member-only information and a checklist about what you can do to manage premature filter blocking is available on the NFU Scotland Filter Blocking Hub, available at:


Contact Bob Carruth on 07788 927675 

Author: Bob Carruth

Date Published:

News Article No.: 69/21

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About The Author

Bob Carruth

A dairy farmer’s son, I joined NFU Scotland in 1999 after 13 years as an agricultural journalist. Following spells as a regional manager and policy lead on milk, livestock and animal health and welfare, I became Communications Director in 2008.

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