---
title: Waste red diesel from marinas: where it comes from
url: https://cityfuel.services/questions/where-does-waste-red-diesel-come-from-at-marinas-and-boatyards/
publisher: City Fuel Services Ltd
---

# Where does waste red diesel come from at marinas and boatyards?

In brief

Boat tanks with water, diesel bug and phase-separated petrol, and fuel drained during engine work and winterisation. Call [07950 582635](tel:+447950582635) or [send an enquiry](https://cityfuel.services/enquiry/).

## Common problems with red diesel at marinas

Water in red diesel: water is where most diesel problems start. Diesel bug in red diesel: the microbes form slime and sludge that block filters and injectors, and produce acids that corrode tanks and fuel systems. Old red diesel: old diesel forms gums and acids, mostly from its biodiesel content, which block filters and injectors.

## Containers at marinas

Drums, cans, small tanks and fuel berth tanks.

## How City Fuel Services handles waste red diesel

Every load of waste red diesel 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

**Mixed fuel**: Petrol and diesel that have ended up in the same container, usually when vehicles are drained during depollution.
**Diesel bug**: Bacteria and fungi that grow where water meets diesel in a tank. They form slime and sludge that block filters.

**Key facts**

| Sector | Marinas and boatyards |
| --- | --- |
| Typical containers | Drums, cans, small tanks and fuel berth tanks. |
| Fuel | [Red diesel](https://cityfuel.services/fuels/red-diesel/) |
| Also called | gas oil, rebated diesel, marked gas oil |
| Waste code | 13 07 01* (fuel oil and diesel) |

## Related questions

- [How does a marina or boatyard dispose of waste red diesel?](https://cityfuel.services/questions/how-does-a-marina-or-boatyard-dispose-of-waste-red-diesel/)
- [What rules apply to marinas and boatyards storing red diesel?](https://cityfuel.services/questions/what-rules-apply-to-marinas-and-boatyards-storing-red-diesel/)
- [Who collects waste red diesel from marinas and boatyards?](https://cityfuel.services/questions/who-collects-waste-red-diesel-from-marinas-and-boatyards/)
- [How often should a marina or boatyard have waste red diesel collected?](https://cityfuel.services/questions/how-often-should-a-marina-or-boatyard-have-waste-red-diesel-collected/)
- [What should a marina or boatyard do with red diesel contaminated with water?](https://cityfuel.services/questions/what-should-a-marina-or-boatyard-do-with-red-diesel-contaminated-with-water/)
- [What should a marina or boatyard do with red diesel contaminated with diesel bug?](https://cityfuel.services/questions/what-should-a-marina-or-boatyard-do-with-red-diesel-contaminated-with-diesel-bug/)
- [What should a marina or boatyard do with stale red diesel?](https://cityfuel.services/questions/what-should-a-marina-or-boatyard-do-with-stale-red-diesel/)

## Red diesel in brief

Red diesel is gas oil: a middle-distillate fuel close to road diesel, made to BS 2869 for off-road engines, heating and power. Clean, dry gas oil recovers well.

**Official guidance:** [GOV.UK: hazardous waste](https://www.gov.uk/dispose-hazardous-waste).

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City Fuel Services Ltd, Fairfield Road, Droylsden, Manchester M43 6AX. Call 07950 582635 or send an enquiry at https://cityfuel.services/enquiry/.