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Petrol in Diesel

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Tank Sizes and Petrol in a Diesel Vauxhall Monterey

Someone who has put petrol in a diesel Vauxhall Monterey wants to find out the size of its tank early, because that settles what share of the fuel in there is currently petrol. We list the tank size for every version of the Vauxhall Monterey that our figures cover here, together with the motors it came with.

The advice doesn't vary with the number once it has occurred. As soon as you switch the motor off then phone Petrol in Diesel, we'll come and drain your car where it sits.

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How each version stacks up on Vauxhall Monterey fuel tank capacity

The Vauxhall Monterey carries the same diesel tank across every version we have figures for, and it holds 85 litres.

VersionFuel tank
Vauxhall Monterey 3.0 DTI 16V RS85 litres
Vauxhall Monterey LTD 3.1 TD85 litres
Vauxhall Monterey RS 3.1 TD85 litres

A few litres of wrong fuel in your Vauxhall Monterey, and what they mean

Wrong fuel in your Vauxhall Monterey blends with whatever diesel is still inside your tank, so the share of it that is petrol depends on how full your tank was when you refuelled. Up to 85 litres fit into the tank. Filling a nearly full one with a couple of litres of unleaded means just a minor share of petrol in the whole, while the same quantity in a nearly empty tank makes up far more of what the motor would draw.

Often, drivers want to know at what point that petrol becomes too much. Running the engine is what takes that mixture from the tank and through your pump and your injectors, so the more helpful point to know is if it's run.

Having it emptied is the safe course no matter what the proportion is. When the quantity is modest, your Monterey usually needs no more than that.

Fuel drain on a diesel Vauxhall Monterey

Engines used in your diesel Monterey

Before you ring, it is worth reading the version name on the badge, because it tells us which motor your Monterey has.

Among the diesel Monterey versions in our figures, the badges read TD and DTI.

The Monterey LTD 3.1 TD carries the biggest motor at 3.1 litres, and the Monterey 3.0 DTI 16V RS the smallest one at 3.0 litres.

If you are not sure which version you drive, ring all the same then we'll figure it out together.

Fuel tank size and AdBlue in a diesel Vauxhall Monterey

With AdBlue, tank size plays out differently. With AdBlue in a diesel Vauxhall Monterey, your diesel sitting inside your tank doesn't dilute it. Being mostly water, AdBlue stays separate from your diesel and sinks to the bottom, which is where your pump draws from. Even a tiny quantity ends up in your fuel lines.

Nothing in AdBlue combusts, and the pump gets no lubrication from it. When its water dries out, urea is left in your lines and the fuel filter as crystals, and the metalwork around it is eaten into.

The filler for AdBlue, on diesel cars that carry it, commonly shares a flap with the diesel one and leads to a separate tank. If your Monterey has an AdBlue filler, the diesel pump nozzle is the larger of the two, and the AdBlue cap is normally blue.

What a fuel drain on your Vauxhall Monterey takes

Whatever size your tank is on your version, a fuel drain on your Vauxhall Monterey empties the lot, right where the car is sitting. Pumping out the tainted fuel happens first, followed by a flush of your lines and the filter. Then we refill with fresh diesel, prime your system and fire up your engine.

Still at the station forecourt or parked on your driveway, your Monterey can be emptied just the same. Fresh diesel is what it runs on after the drain is done, so you can take it away.

AdBlue removal from a diesel Vauxhall Monterey

Clearing your tank entirely is where AdBlue removal from a diesel Vauxhall Monterey begins, as AdBlue doesn't blend in and collects at the bottom instead. Where your engine has run, the lines and your filter are cleaned through too, and the fuel filter is replaced if needed.

What this covers is AdBlue that ended up in the diesel tank, not taking out or switching off the AdBlue system on the car.

How the quote of a fuel drain on the Vauxhall Monterey is set

We do not publish a fixed price, since two jobs on the same model can be rather different. The largest factor is whether anyone has run or driven the Monterey. Then comes the amount that was put in compared with how big the tank is, what fuel it was, and where the car is at the moment.

We can let you know what's involved in the job once you ring with those details.

Queries on your tank and petrol in a diesel Vauxhall Monterey

What's the fuel tank capacity of the Vauxhall Monterey?

85 litres, with every version we have data for using the same tank.

With a larger tank, is petrol less of an issue?

In a larger tank, petrol is a smaller share of the whole, yet it hasn't gone anywhere, and it reaches your pump once the motor runs. Keep your Monterey switched off and draining it gets every bit of that petrol out.

How many diesel versions of the Monterey do you cover?

Our figures include 3 diesel versions of the Monterey, all set out in the table above, so you can spot yours there using the name printed on its badge.

Is it wrong fuel in my Vauxhall Monterey if it's not diesel?

Just diesel belongs in your diesel tank. Petrol of any type, super unleaded too, is wrong fuel, and so is AdBlue, which belongs in a tank of its own.

Can you drain the Vauxhall Monterey wherever it is?

There is no need to shift or start your car. Whether it is left at home or still on the forecourt, we travel to it.

Call 0333 366 0103