Belgium has been fining cruisers with traces of red diesel in their tanks despite having VAT paid receipts. This has now been suspended pending pan-European consideration of the issue in September 2017. In the meantime, it is wise to print our and have a copy of the letter stating that the fines have been suspended pending EU decision.

http://www.noonsite.com/Countries/Belgium/belgium-confusion-over-red-marked-diesel-the-lastest/?t=1&cn=ZmxleGlibGVfcmVjcw%3D%3D&refsrc=email&iid=5ebbe282c212483b8525e5511516c30a&uid=780354544316350464&nid=244+285282312

Vice Commodore, OCC