How does sludge build up in red diesel tanks?
In brief
Sludge is the thick layer that collects at the bottom of fuel tanks over years: water, microbial growth, rust, dirt and degraded fuel settling together. Each of these is worth checking if you have found sludge in red diesel tanks. Call 07950 582635 or send an enquiry.
How to spot sludge in red diesel tanks
Dip the tank to the bottom: a soft, dark, gritty or slimy layer below the fuel is sludge. Blocked filters, and fuel that turns dark when the tank runs low, are signs too.
Preventing sludge in red diesel tanks
Drain water regularly, keep tanks reasonably full and turned over, and have them cleaned every few years.
How City Fuel Services handles waste red diesel
Send us the five details: business and postcode, roughly how much waste red diesel 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
- Mixed fuel
- Petrol and diesel that have ended up in the same container, usually when vehicles are drained during depollution.
- AdBlue
- A solution of urea in water (32.5% urea) used in the exhaust systems of many diesel vehicles. It belongs in its own tank; in fuel it is a contaminant.
| Problem | Sludge in Gas oil (red diesel) |
|---|---|
| Recoverable? | Mostly no. |
| Fuel | Gas oil (red diesel) |
| Also called | gas oil, rebated diesel, marked gas oil |
| Waste code | 13 07 01* (fuel oil and diesel) |
Related questions
- How can you tell if a red diesel tank has sludge in it?
- Can red diesel tank sludge be recovered?
- Is red diesel tank sludge worth anything?
- What should I do with red diesel tank sludge?
- How do you remove sludge from a red diesel tank?
- How do you stop sludge building up in red diesel tanks?
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Official guidance: GOV.UK: hazardous waste.