Imports of Mineral Oil: Directions for particular goods: Marked heavy oil
Gas oil or kerosene for use as road fuel: colour prohibition
Hydrocarbon Oil (Marking) Regulations 2002, (HOMR) Regulation 17 prohibits the sale of dark oil for use as fuel for a heavy oil vehicle.
Gas oil is normally a pale greenish straw colour, although some gas oil may be slightly darker. However in all cases it should be transparent. Kerosene is normally slightly darker than gas oil; its density is significantly lower than gas oil.
Imported marked oil not in accordance with HOMR
Oil marked abroad must conform to the UK Regulations before entry to Tax Type Code 551 or 556 at the rebated rate of UK excise duty.