Put diesel in a petrol car? Do NOT start the engine. Call us immediately: 0330 520 1620

Put Diesel in a
Petrol Car?

Putting diesel in a petrol car is less common than the reverse, but it still happens. While diesel in a petrol engine is generally less immediately damaging, you should still not start the engine and call us immediately for advice and recovery.

What to Do if You Put Diesel in a Petrol Car

Follow these steps immediately — acting quickly reduces the risk of damage.

1

Do NOT start the engine

Even though diesel in a petrol car is less likely to cause catastrophic damage than petrol in a diesel, you should still not start the engine. Diesel can foul the spark plugs and catalytic converter and cause misfiring. Turn the engine off immediately if you have already started it.

2

Move to safety

If you are still at the petrol station, leave the car at the pump and inform forecourt staff. If you have already driven away, move to a safe location, switch on your hazard lights, and stay clear of traffic.

3

Call Black Eagle Recovery on 0330 520 1620

We will arrange recovery to a suitable garage or refer you to a fuel drain specialist as quickly as possible. The sooner you call, the better.

4

Do not attempt to drain it yourself

Attempting to drain the fuel yourself can cause additional damage and is dangerous. Leave it to a trained fuel drain specialist.

What Happens When You Put Diesel in a Petrol Car?

Unlike diesel engines, petrol engines do not rely on the fuel for lubrication. This means diesel in a petrol engine is generally less immediately damaging than petrol in a diesel. However, it can still cause problems.

Diesel is thicker and oilier than petrol. In a petrol engine, it can foul the spark plugs, block the fuel filter, and coat the catalytic converter. If the engine is started, you may experience heavy smoke from the exhaust, misfiring, and eventually the engine may cut out.

If the engine is not started, a fuel drain and flush is usually sufficient. If the engine has been started and driven, additional work may be required to clean or replace the spark plugs and catalytic converter.

Why Call Black Eagle for Diesel in Petrol Recovery?

24/7 Response

We answer at any hour — early morning, late night, bank holidays. One number, always answered.

Vetted Operators

Every operator is vetted and insured. We only work with professionals who handle wrong fuel incidents correctly.

Fast Response

We aim to confirm an ETA within minutes of your call. The faster you call, the less damage is done.

Diesel in Petrol Car — FAQs

Diesel in Your Petrol Car? Call Now.

Do NOT start the engine. Call us immediately — 24/7 wrong fuel recovery across the UK.

0330 520 1620
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