Tank Sizes for Petrol in a Diesel Porsche
How much of the fuel in your tank is currently petrol rests on how big the tank is on your model, when you have got petrol in a diesel Porsche. Tank sizes for the whole diesel Porsche range are given here, and every model has its own page too, listed further down.
The size doesn't change the advice. Once it has happened, leave the engine off then phone Petrol in Diesel, and we will come out to empty your car where it is.
What every diesel Porsche takes in its fuel tank
Fuel tanks across the diesel Porsche range take between 80 and 100 litres, depending on the model and the variant.
We list 2 diesel Porsche models in 3 variants in all, and each model page gives the fuel tank for each one.
Does a tiny amount of wrong fuel in your Porsche matter?
How full the tank was when you refuelled determines the proportion of petrol, as wrong fuel in your Porsche mixes with whatever diesel was already in it. With a tank of up to 100 litres, a couple of litres of petrol on top of an almost full tank is a small share of the whole, and the same few litres in a tank that was almost empty makes up much more of what your engine would take in.
Drivers often ask how much petrol is too much. Whether the motor has run is the more useful thing to check. Once it runs, the pump pulls the mixture from your tank and sends it on to the fuel injectors.
A drain is usually all the car needs when the amount is modest.
Diesel Porsche engines and their badges
Before you ring, it is worth checking the badging on the back and the model name, as they show us which one you have. Phone even if you're not certain, as we'll figure it out with you on the phone.
AdBlue in a diesel Porsche
With AdBlue, fuel tank size is no help. If you have got AdBlue in a diesel Porsche, the diesel surrounding it can't thin it, since AdBlue is mostly water and does not blend with diesel. It settles to the base of your tank, where the fuel pump draws from, so even a tiny volume gets into the fuel lines.
As the water in AdBlue dries out, the urea left behind crystallises in the lines and the filter, and AdBlue does not ignite or give the fuel pump any protection either.
Under the same fuel flap as the diesel filler there is frequently a separate one for AdBlue, with a blue cap and a narrower nozzle, if the car carries a separate AdBlue tank.
How a fuel drain on your Porsche works
However big the tank is on your car, a fuel drain on your Porsche empties the lot, just where your car is standing. Clean diesel is put in after the tainted fuel has been pumped out and the lines and your filter are flushed, and then the system is primed and your engine fired up.
Once the drain is finished, the vehicle is running on clean diesel and you can take it away.
The stages in AdBlue removal from a diesel Porsche
With AdBlue sitting at the bottom of your tank instead of being mixed in, AdBlue removal from a diesel Porsche starts by clearing the tank completely. If the motor has run, we flush the fuel lines and the filter through as well and replace the fuel filter where needed.
Taking out or turning off the AdBlue system on your car is not what this covers. It is about AdBlue that has got into the diesel tank.
How the price of a fuel drain on a diesel Porsche is set
We do not list a fixed price, because two jobs on the same model can be very different. How much went in compared with the size of your tank, whether it was petrol or AdBlue, and the car's location all count, yet whether your car has been driven or only started affects it most. Those details are what we need to tell you what the work takes. Phone with them ready.
Tank questions about petrol in a diesel Porsche
The largest tank in the diesel Porsche range: which model?
The Cayenne carries the largest tank in our figures, with up to 100 litres, and the Panamera has the smallest.
Does a bigger tank make petrol less of a problem?
That petrol is still there in a larger tank, and still reaches the fuel pump once the motor runs, even though a couple of litres make up less of the whole. All of it is cleared with a drain, as long as your car is turned off.
How do I find the tank capacity for my precise version?
Each version we hold figures for is listed alongside its tank on the page for your car, which is linked below.
Wrong fuel in my Porsche: what does that cover?
Petrol qualifies whatever the grade, super unleaded too, and so does AdBlue that was meant for its own dedicated tank. Everything other than diesel in the diesel tank is wrong fuel.