Tank Sizes and Petrol in a Diesel Subaru Legacy
Anyone who has put petrol in a diesel Subaru Legacy needs to find out the capacity of its fuel tank early on, since that settles what share of what is in there is now petrol. Every version of the Subaru Legacy we hold data for is set out on this page alongside its tank size, and so are the motors it came with.
Once it has occurred, the same advice applies whatever the size happens to be. With your engine kept off, ring Petrol in Diesel and the vehicle can be drained where it is.
The Subaru Legacy fuel tank capacity for every version
64 litres is what the fuel tank holds on every version of the Subaru Legacy we have figures for, because they all share the same fuel tank.
| Version | Fuel tank |
|---|---|
| Subaru Legacy 2.0D | 64 litres |
| Subaru Legacy Estate 2.0D | 64 litres |
What a few litres means with wrong fuel in your Subaru Legacy
Whatever diesel is still inside the tank blends with the wrong fuel in your Subaru Legacy, and how full the tank was when you filled up sets how much of the mix is petrol. When a couple of litres of petrol go into a tank running close to empty, they make up a much larger part of what the engine would take in. Added to a nearly full tank of up to 64 litres, the same amount is only a small share of the whole.
Motorists often ask how much petrol is too much. The more helpful thing to find out is whether the motor has run, because starting the engine is what takes the blend from the tank and through your pump and the injectors.
With a modest volume, a drain is normally all your Legacy needs, and whatever the proportion, having it emptied is the sensible course.
Engines found in your diesel Legacy
When you call, it is useful to have read the badge beforehand, as the name of the version on it shows us which motor your Legacy has.
Our data include Estate versions of the Legacy too.
Not knowing which version you own does not need to stop you. Call all the same, then we'll figure it out with you.
Tank size and AdBlue in a diesel Subaru Legacy
AdBlue alters what the size of your tank means. If you have AdBlue in a diesel Subaru Legacy, your diesel surrounding it does not thin it, as AdBlue is largely water and doesn't mix with diesel. It settles to the base of your tank, which is where the fuel pump pulls from, so even a small amount reaches your fuel line.
AdBlue doesn't combust and gives the pump no lubrication, and as its water dries out, the urea left over forms crystals in the lines and the filter and eats into the metalwork next to it.
A separate tank with a dedicated filler carries the AdBlue on some diesel vehicles, often beside the diesel filler under the same fuel flap. If your Legacy has an AdBlue filler, the diesel nozzle is the bigger of the two, and the AdBlue cap is normally blue.
Fuel drain on your Subaru Legacy
Carried out where the vehicle is standing, a fuel drain on your Subaru Legacy empties the entire tank, whatever size the tank is on your version. We pump the tainted fuel out, flush the lines and the filter, and fill up again with fresh diesel ahead of re-priming the fuel system and starting the engine.
Whether your Legacy is still on the forecourt or left on your drive does not change a thing. Once we finish this drain, your car is running on fresh diesel and free to drive away.
What AdBlue removal from a diesel Subaru Legacy involves
Clearing your tank entirely is how AdBlue removal from a diesel Subaru Legacy starts, because AdBlue doesn't mix in and collects at the bottom instead. Where the engine has been run, the lines and the filter are cleaned through as well, and the fuel filter is replaced if needed.
This is about AdBlue that has got into your diesel tank. It is not taking out or switching off the AdBlue system on the vehicle.
What a fuel drain on the Subaru Legacy costs
There is no fixed price published on this page, because jobs on one model can differ quite a lot. What changes it most is whether the Legacy has been started or driven, and beyond that how much got in relative to the size of your tank, whether it was petrol or AdBlue, and where your car is now.
With those facts, we can explain what this job will involve when you ring.
Tank queries about petrol in a diesel Subaru Legacy
What is the fuel tank capacity of the Subaru Legacy?
The same tank is used on each version in our figures, taking 64 litres.
Does a larger tank make petrol less of a worry?
In a larger tank, petrol is a smaller part of the whole, yet it has not gone anywhere, and it gets to the pump once your engine runs. Leave your Legacy switched off and emptying it gets all of that petrol out.
Do you list more than one diesel Legacy?
We have figures for 2 diesel versions of the Legacy, so you can find yours in the table above by the name on its badge.
Wrong fuel in my Subaru Legacy: what does that cover?
Anything apart from diesel in your diesel tank, meaning petrol of every grade, super unleaded as well, or AdBlue meant for its own separate tank.
Wherever the Subaru Legacy is, can you drain it?
Yes, wherever it is. Parked at home or still at the pump, the car remains put and is not started, because we come to it.