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How can you tell if kerosene has diesel in it?

In brief

A heavier, oily smell, darker or cloudier fuel, and a higher density than expected. Petrol engines running on it smoke heavily and misfire. Call 07950 582635 or send an enquiry.

What diesel in kerosene does

Diesel in kerosene burns dirtier: boilers built for kerosene soot up, smoke and lock out.

If you find diesel in kerosene

Stop using the fuel, keep it in a closed container away from drains and ignition sources, and note roughly how much there is. Yes, as mixed fuel, by reprocessing.

How City Fuel Services handles waste kerosene

Every load of waste kerosene is assessed before anything is booked. Tell us the quantity, the containers and any contamination; we confirm the terms, collect with a suitable vehicle, and take it to a permitted facility on a consignment note.

Terms used in this answer

Diesel bug
Bacteria and fungi that grow where water meets diesel in a tank. They form slime and sludge that block filters.
Flash point
The lowest temperature at which a liquid gives off enough vapour to catch light. Petrol's is around minus 40 °C; diesel's is above 55 °C.
Key facts
ProblemDiesel in Kerosene
Recoverable?Yes, as mixed fuel, by reprocessing.
FuelKerosene
Also calledheating oil, burning oil, 28-second oil
Waste code13 07 03* (other fuels (including mixtures))

Related questions

Kerosene in brief

Kerosene is a light middle distillate, lighter than diesel, used mainly as heating oil (often called 28-second oil or burning oil) and, in a tightly specified form, as jet fuel (Jet A-1, also called Avtur). Clean, dry kerosene recovers well.

Official guidance: GOV.UK: hazardous waste.

Holding waste fuel? Tell us what you have.

Business and postcode, quantity, fuel and contamination, storage and access, one-off or recurring. We assess it and confirm a rebate or a collection charge before anything is booked.