---
title: How do you stop sediment building up in avgas?
url: https://cityfuel.services/questions/how-do-you-stop-sediment-building-up-in-avgas/
publisher: City Fuel Services Ltd
---

# How do you stop sediment building up in avgas?

In brief

Keep fill caps and vents sound, use filtered fill points, and clean tanks periodically. Prevention costs far less than dealing with sediment in avgas once it has happened. Call [07950 582635](tel:+447950582635) or [send an enquiry](https://cityfuel.services/enquiry/).

## How sediment in avgas happens

Rust and scale from steel tanks, dust and grit through open fill points and vents, and degraded fuel all settle to the bottom of tanks over time.

## Checking for sediment in avgas

Particles or grit at the bottom of a sample jar, hazy fuel, and filters that block quickly.

## How City Fuel Services handles waste avgas

Send us the five details: business and postcode, roughly how much waste avgas there is, what it is and any contamination, how it is stored and reached, and whether you need one collection or regular ones. We assess it, confirm a rebate or a collection charge, and collect 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.
**Bund**: A wall, tray or outer case around a fuel container that holds any leak. For oil and fuel stored at a business, bunds for tanks, bowsers and IBCs are sized at 110% of the container.

**Key facts**

| Problem | Sediment in Avgas |
| --- | --- |
| Recoverable? | Yes. |
| Fuel | [Avgas](https://cityfuel.services/fuels/avgas/) |
| Also called | aviation gasoline, aviation spirit, Avgas 100LL |
| Waste code | 13 07 02* (petrol) |

## Related questions

- [Is avgas contaminated with sediment hazardous waste?](https://cityfuel.services/questions/is-avgas-contaminated-with-sediment-hazardous-waste/)
- [Who collects avgas contaminated with sediment?](https://cityfuel.services/questions/who-collects-avgas-contaminated-with-sediment/)
- [Can you still use avgas with sediment in it?](https://cityfuel.services/questions/can-you-still-use-avgas-with-sediment-in-it/)
- [What happens to dirty avgas after collection?](https://cityfuel.services/questions/what-happens-to-dirty-avgas-after-collection/)
- [What happens if sediment builds up in avgas?](https://cityfuel.services/questions/what-happens-if-sediment-builds-up-in-avgas/)
- [How can you tell if avgas has sediment in it?](https://cityfuel.services/questions/how-can-you-tell-if-avgas-has-sediment-in-it/)
- [How do you stop water getting into avgas?](https://cityfuel.services/questions/how-do-you-stop-water-getting-into-avgas/)
- [How do you stop jet fuel getting into avgas?](https://cityfuel.services/questions/how-do-you-stop-jet-fuel-getting-into-avgas/)
- [How do you stop diesel getting into avgas?](https://cityfuel.services/questions/how-do-you-stop-diesel-getting-into-avgas/)

## Avgas in brief

Avgas (aviation gasoline, or aviation spirit) is a petrol-type fuel for piston-engined aircraft. Volumes are usually small (drums, bowser residues, tank bottoms at airfields), so terms depend heavily on volume, contamination and access.

**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/.