Petrol in a Diesel Land Rover Discovery? Start With the Tank
How much petrol there currently is in the mix rests on the tank, so its capacity is well worth finding out straight away when you've put petrol in a diesel Land Rover Discovery. The tank and the engines are given here for every Land Rover Discovery version which we keep figures for.
Whatever the figure, the advice is the same after it has occurred. Leave the engine off then call Petrol in Diesel, and we'll come to drain your car where it stands.
Land Rover Discovery fuel tank capacity, by version
Depending on what version you have, the diesel tank on the Land Rover Discovery takes anywhere from 82 to 93 litres.
Our figures put the biggest tank on the Discovery Td5 and the smallest on the Discovery 3.0 TDV6.
| Version | Fuel tank |
|---|---|
| Land Rover Discovery 3.0 SDV6 | 82 litres |
| Land Rover Discovery 3.0 TDV6 | 82 litres |
| Land Rover Discovery Td5 | 93 litres |
| Land Rover Discovery TDV6 | 82 litres |
| Land Rover Discovery TDV6 2.7 | 88 litres |
| Land Rover Discovery TDV6 3.0 | 88 litres |
What a couple of litres means with wrong fuel in your Land Rover Discovery
The share of petrol hinges on how full the tank was before you filled up. That is because wrong fuel in your Land Rover Discovery blends with whatever diesel was already in it. When a few litres of unleaded go into a tank sitting close to empty, they make up a far larger part of what the engine would take in. Added to an almost full tank of up to 93 litres, the same quantity is only a minor share of the whole.
People commonly want to know how much petrol counts as too much. It's more useful to know if your engine has been run, because a running motor is what takes the mixture from the tank and through your pump and the fuel injectors.
A fuel drain is the sensible course no matter what the share, and with a small volume it's normally all your Discovery needs.
The engines fitted to the diesel Discovery
The motor in your Discovery is given in the version name on the badge. Check it before you call.
Our figures give TDV6 and TD5 badges on all diesel versions of the Discovery.
At the bottom of the range sits the Discovery TDV6 2.7 with 2.7 litres, and at the top sits the Discovery TDV6 3.0 at 3.0 litres.
When you phone, we can figure out which version it is between us, even if you're not sure of it yourself.
When there is AdBlue in a diesel Land Rover Discovery
Fuel tank size works differently with AdBlue. If you have got AdBlue in a diesel Land Rover Discovery, the diesel around it does not weaken it, since AdBlue is mainly water and doesn't blend with diesel. It sinks to the bottom of your tank, which is where the fuel pump pulls from, so even a small amount gets into the fuel lines.
AdBlue doesn't burn and gives your pump no protection, and as its water dries out, the urea left behind crystallises in the lines and the filter and corrodes the metal next to it.
On certain diesel cars, AdBlue has a second tank of its own, and its filler often sits beside the diesel one under the same fuel flap. On any Discovery with an AdBlue filler, a blue cap normally shows it, and that cap fits a narrower nozzle than the diesel one.
How a fuel drain on your Land Rover Discovery works
Whatever size your tank is on your version, a fuel drain on your Land Rover Discovery empties all of that, just where the vehicle is parked. We draw the contaminated fuel out, rinse the fuel lines and the filter, and fill up again with clean diesel ahead of re-priming your system and starting the engine.
Whether your Discovery is still at the station forecourt or left on your driveway does not change anything. You can take it away once this drain is finished, and it will be running on fresh diesel.
AdBlue removal from a diesel Land Rover Discovery, explained
With AdBlue lying at the base of your tank and not blended in, AdBlue removal from a diesel Land Rover Discovery starts by draining your tank completely. A motor that has been started means flushing the fuel filter and lines through as well, and changing the fuel filter if it needs it.
What this covers is AdBlue that ended up in the diesel tank, not taking out or switching off the AdBlue system on the vehicle.
Pricing a fuel drain on the Land Rover Discovery
There is no fixed price published on this page, since call-outs on one model can differ quite a lot. How much went in compared with the size of your tank, petrol or AdBlue, and where your car is now all matter, yet whether the Discovery has been driven or only started affects it most.
Those facts are what we need to tell you what this work involves. Phone with them to hand.
Queries on the tank and petrol in a diesel Land Rover Discovery
Fuel tank capacity of the Land Rover Discovery: how much does it hold?
It varies with the version, from 82 to 93 litres, and the table above has each one.
Does a larger tank make petrol less of a problem?
A bigger tank means a few litres form less of the total, but that petrol is still there and still gets to your pump once the engine runs. Leave your Discovery turned off and emptying it gets all of the petrol out.
Diesel versions of the Discovery: how many do you list?
There are 6 diesel Discovery versions in our data, and the name on your badge tells you which row of the table above is yours.
Which fuels, other than diesel, would be wrong fuel in my Land Rover Discovery?
Petrol counts whatever the grade, super unleaded too, and so does AdBlue that was intended for its own separate tank. Everything other than diesel in the diesel tank is wrong fuel.
Will you drain the Land Rover Discovery where it stands?
We do. Your car doesn't need to be moved or switched on, since we travel to it whether it's still at the forecourt or left at home.