Preventing AdBlue in a Diesel Tank in Mount Hermon: Why It Happens
Pause reading for a moment when your diesel tank already has AdBlue in it: ignition off, engine off, then phone 0333 366 0103. Usually, when the engine hasn't turned, it's emptied and fully purged where your car is around Mount Hermon. The rest of this page explains why it happens and how to ensure it doesn't — useful if you are reading before it has happened.
Two fillers, two tanks: AdBlue in a diesel car
Not one liquid but two: that is how plenty of modern diesels near Mount Hermon and Hockering Estate run, with diesel feeding your engine. AdBlue goes to your exhaust, where it is sprayed into the gas to clean it, and it lives in a tank of its own.
Separate tanks, separate fillers. Other motors keep the AdBlue filler in the boot or under the bonnet; plenty more have both side by side under one flap. The diesel side is fuelled at the petrol pump all the time. The AdBlue side is fuelled far less often, normally from a bottle, and normally by a person who has to stop and think where it goes. That gap is where the error lives.
AdBlue in your diesel tank around Mount Hermon: how it takes place
Carelessness seldom causes it. What does is three things coming up together.
Hurry follows from the warning. Your car warns you as AdBlue runs low, and an empty tank puts it into limp mode — so the top-up happens in a rush, before work on a driveway off York Road, or on the way home in the car park at The Sovereigns.
The old car's cap is where your hand reaches — yet a rental car, a new car or a company car puts the fillers elsewhere. That's a second factor: an unfamiliar motor.
A spout-topped bottle meets no resistance at a diesel filler any more than at an AdBlue one. And so the tip, after started, keeps on. It takes seconds, be it out in Woking or bang in the heart of Mount Hermon.
How to tell the AdBlue filler from the diesel one
Check these before pouring, on a forecourt in Mount Hermon or a drive out in St Johns. A few seconds, no more.
- Check the cap instead of going by position: AdBlue ones are regularly blue or marked "AdBlue", and diesel caps usually are not.
- Plenty of motors fit AdBlue the smaller filler of the two.
- A label inside the fuel flap often says which fuel goes where, on many vehicles. Look for it.
- In the boot or under the bonnet: that is where your filler is if it's not by the diesel cap, and the handbook tells you which.
- Check with the person who drove it last — before you leave, not when the light comes on — if you pick up a hire or company car from somewhere like the car park at Woking.
Topping up AdBlue without it reaching your diesel tank
The day the light comes on, wherever around Surrey, use this routine.
- Stop somewhere level, motor off, with time to spare — never rushing on the side of Bradfield Close.
- Daft as it sounds, saying "AdBlue" out loud as you unscrew the cap does the trick — once you have found your filler and read it.
- The two under one flap? Then make sure the lid on the diesel filler stays closed ahead of lifting the bottle.
- Finish once the tank is topped up or the bottle is empty; before that, pour slowly through its own spout.
- Before starting the vehicle, close the cap and look a second time that your diesel cap never opened off.
Find at stage two or three that it's already gone into your diesel side? Then stop just there. Skip stage five altogether.
Put AdBlue in your diesel tank around Mount Hermon already?
Then the order of things is short. Don't start the motor. On plenty of diesels the ignition alone runs the fuel pump, so don't switch it on. AdBlue does not mix with diesel — it sinks to the bottom of that tank, where the fuel is sucked from — so do not top up with diesel to dilute it.
Ask the staff to help roll the vehicle away from the pump if you are on a forecourt — the Morrisons, the Texaco or somewhere else. Leave it where it is if you are on your own drive around Mount Hermon.
If your motor has already run, stop as soon as it is safe and switch off. Mount Hermon lies under 5 miles from the M25; on it, take the first junction. Mileage matters — a quick hop across Mount Hermon makes a smaller job than heading under 25 miles to Westminster — so tell us roughly how far it went.
When our engineers get there in Mount Hermon, what happens?
Our engineers come to the car wherever it has stopped, whether that is outside Goldsworth Primary School, close to Woking Conservative Club or on your own drive. Both the work and our price depend on three replies — which liquid, what quantity, and whether it's run — so we ask. No one sets off until you have had the price over the phone.
Draining your tank comes next, followed by a thorough flush of the fuel system. Unlike petrol, AdBlue leaves crystals and eats at some fuel-system metals, and neither clears away unaided. That is why it matters more. The fuel filter is flushed, or replaced where it needs to be; fresh diesel goes in; and the vehicle is tested. Next we fire it up and check it runs smoothly before leaving.
Most jobs are finished in about half an hour after our engineers get there, as long as your motor hasn't run — and the pumps our engineers use are safe on a busy forecourt yet quiet after dark beside a house. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. It's worth checking your insurance while we travel to you: misfuelling cover comes with many policies.
About Mount Hermon itself
Mount Hermon is a suburban area in Surrey, situated near the River Wey and close to the towns of Woking and Horsell. Mount Hermon sits at an elevation of 39 metres, with its riverside setting influencing the local environment. Mount Hermon is characterized by a high proportion of flat dwellings, reflecting its suburban nature.
AdBlue drains round Mount Hermon, and Surrey beyond
Mount Hermon is a residential suburb, and the vans that cover it also work the places around it, Kingfield and Horsell among them, across the GU postcode area. A postcode starting GU22 7 gets our van to you fastest.
The vehicle remains put. A drive, a lay-by on the way to Scented Gardens, a side street near HM Coroner's Court: our engineers drain it where it is. Assuming doesn't help at the back of Pride Hub, close to a boundary, or anywhere hard to describe; ring and check.
For Mount Hermon people, the short version
Read the cap before you pour. Petrol in Diesel drains it on the spot, anywhere around Surrey, if AdBlue has gone in your diesel tank all the same — and so leave the car off and phone 0333 366 0103.