--- title: Newtonmore: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/newtonmore-highland/ location: Newtonmore county: Highland latitude: 57.063540 longitude: -4.123550 service: AdBlue in a Diesel Tank updated: 2026-10-07 --- # Why It Happens and How to Avoid It: AdBlue in a Diesel Tank in Newtonmore Leave your motor and ignition off then phone 0333 366 0103 now — reading can wait if AdBlue is already in your diesel tank. In Newtonmore, catching it before your motor turns normally leaves draining and a thorough flush on the spot. If you're reading before it has happened, the rest of this page is about why it occurs and how to make sure it doesn't. ## Why does AdBlue in a diesel car need its own filler? Diesel goes to the motor — yet many modern diesels seen about Newtonmore and Lynchat carry a second fluid too. AdBlue's own tank holds it, and from there it goes to the exhaust, and there a spray treats the gas. Each tank has its own filler. Plenty of vehicles share a single flap for both, while some move the AdBlue filler to the boot or under the bonnet. The diesel side is topped up at the petrol pump all the time. The AdBlue side is topped up far less commonly, normally from a bottle, and usually by somebody who has to stop and think where it goes. The mistake grows in the gap between them. ## How does AdBlue in your diesel tank happen around Newtonmore? It is hardly ever carelessness. Three things tend to line up. The warning comes first. As AdBlue runs low the car tells you, and if it runs out altogether, the car goes into limp mode. So the top-up is done in a hurry: on a drive off Main Street before work, or in the car park at Shinty Bar on the way home. Unfamiliar cars come second, as well. Rentals, new vehicles and company cars put their fillers in new places, and habit goes for the cap used on the old one. A spout-topped bottle meets no resistance at a diesel filler no more than at an AdBlue one. So the tip, once begun, keeps on. The same few seconds decide it, in the middle of Newtonmore or out in Kingussie. ## How to tell the AdBlue filler from the diesel one A few seconds is all these take — so run through them before you tip anything, on a drive in Drumguish or a forecourt around Newtonmore. - Position misleads; the cap doesn't. AdBlue caps are often blue or bear the name "AdBlue" — diesel caps normally don't. - Plenty of vehicles give AdBlue the smaller neck of the two. - Check inside your fuel flap: many motors have a label there showing which fuel goes where. - In the boot or under the bonnet: that is where the filler sits if it is not by the diesel cap, and the handbook tells you which. - The previous driver knows. Check when you collect a rental or company car — at the nearest station's car park, say — not when the warning appears. ## How to top up without AdBlue in your diesel tank Anywhere around Highland the light comes on, this is a routine for the day. - Park and switch off. Not on a slope, not with your motor running, and not in a rush on the side of Laggan Road. - Locate the AdBlue filler, check the cap, and say the word "AdBlue" aloud while you unscrew it. It sounds silly. It works. - If both sit under one flap, check your diesel cap is still closed before you lift the bottle — then leave the car on. - Stop when your tank fills or the bottle is empty; before that, pour gently using its own spout. - Before you start the car, shut the cap and check a second time that the diesel cap was never opened off. If at step two or three you find you have already poured into the diesel side, stop there. Do not go on to step five. ## Put AdBlue in your diesel tank in Newtonmore already? Short list, then. First: your engine remains unstarted. Leave the ignition off as well, because on plenty of diesels it alone starts the fuel pump. Thinning it with more diesel fails, since AdBlue sinks to the base rather than blending — and that's where the fuel is sucked from. The staff at Esso, another forecourt nearby or another forecourt will usually lend a hand pushing the vehicle clear if you ask. Your own drive around Newtonmore is the place it stays. Already started? Stop once it's safe, then switch off. On the M90, over 50 miles from Newtonmore, that means the next junction. A short hop across Newtonmore is a smaller job than a run towards Inverness, under 50 miles away, so tell us roughly how far it went. ## When our technicians turn up in Newtonmore, what happens? Wherever the vehicle has stopped, whether outside the local primary school, near Clan McPherson House & Museum or at home, our van comes to it. The answers decide this work and our quote, so our technicians ask what was put in, about how much, and whether it's run. That price is given over the phone, ahead of any van leaving. Next: draining, then a full flush of the entire system. Much more than with petrol, it counts with AdBlue: the crystals build up, certain metals corrode, and nothing clears out unaided, no matter how long it sits. Testing comes last: before that, clean diesel is added, and the fuel filter is flushed or replaced as needed. We do not leave until it has been started and is running correctly. With pumps safe on a working forecourt and quiet enough for use outside a house at night, most jobs in which your engine hasn't run take roughly half an hour after our technicians arrive. Nothing in advance; you settle up on the day. At the end, a VAT invoice and the report from the engineer are handed to you for the insurer. While we travel, take a look at your policy; many carry cover for misfuelling. ## About Newtonmore, for a moment Newtonmore is a small village situated on the banks of the River Spey in the Scottish Highlands, with a population of around 533 people. Newtonmore sits at an elevation of 248 metres, surrounded by rolling hills and scenic countryside, and is located near the towns of Kingussie and Ruthven. Newtonmore has a mix of housing types, but detached homes are the most common, reflecting the village's rural character. Newtonmore is also close to the historic site of Ruthven, and the village of Etteridge is nearby. ## AdBlue drains around Newtonmore and across Highland Newtonmore is a village, and the vans that cover it also work the places around it, Ruthven and Etteridge among them, across the PH postcode area. Give a postcode beginning PH20 1, and the van gets there quickest. The car doesn't need to move. We drain it where it is — a side street close to Newtonmore Village Hall, a lay-by on the way to Newtonmore Centenary Gardens, a driveway. Awkward to explain, like the back of Newtonmore War Memorial? By a county line? Asking beats guessing, so ring. ## The short version for Newtonmore drivers Read the cap before you tip. Petrol in Diesel drains it where it stands, anywhere across Highland, if AdBlue has gone in your diesel tank regardless — so leave it off then phone 0333 366 0103.