⚠️ Ford manufacturer position
Ford Pro manuals prescribe tank drop for diesel Transit Custom. Misfuel is warranty exclusion.
Vehicle information
| Make | Ford |
|---|---|
| Model | Transit Custom |
| Market status | Sold new in the UK — 2012–present (Mk2 from 2023) |
| Body styles | Van and kombi |
| Generations | Mk1 (2012–2023), Mk2 (2023–present) |
| Engine options | Diesel: 2.0L EcoBlue diesel (UK fleet); earlier 2.2L TDCi Hybrid: PHEV variant has petrol tank plus battery — separate remediation for each Electric: E-Transit Custom BEV — no fuel tank |
| Fuel tank capacity | Approximately 70–80 litres (diesel) |
| Fuel system | Common-rail diesel; AdBlue SCR on Euro 6 models |
| Access method | Fuel tank removal (Method B) |
| Anti-siphon | Yes |
| Service portal | Ford Pro ETIS |
Misfuel risk High
Fleet diesel vans are frequently misfuelled with petrol. PHEV adds petrol tank — identify powertrain before drain.
If the engine was not started
Tank drop before crank on diesel misfuel.
If the engine was started
Inspect HP pump and injectors on diesel if engine ran.
Access procedure
- Confirm diesel, PHEV petrol, or BEV variant
- Do not start if petrol entered diesel tank
- Relieve pressure; support tank
- Disconnect fillers and lines; lower tank
- fuel extraction and system flush; replace diesel filter
- Keep AdBlue separate — do not drain into fuel tank
Notes
- One of the highest-volume UK commercial misfuel vehicles
Related models
- Transit
- Tourneo Custom
Frequently asked questions
What if petrol goes in a Transit Custom diesel?
Do not drive. Arrange tank removal and drain — GBIFDA Method B.
Where is AdBlue?
Separate capped filler — not mixed with diesel tank fuel extraction unless contaminated.
Does PHEV Custom have two energy sources?
Yes — petrol tank and plug-in battery; identify before work.
Ford warranty?
Improper fuel excluded.
Need professional misfuel recovery?
Find a certified operator or read consumer guidance for your next steps.
Find an operator Consumer guidance