A survey commissioned by Mobil, purveyors of sensational engine oil, has found that 75% of British drivers don't know how to check their car's oil.

Half of all drivers don't even know why oil is used. Mobil sells oil, by the way.

Most staggeringly, 94% of motorists surveyed by Mobil - the company that sells Mobil 1 oil - are unaware that using the correct oil can significantly prolong the life of an engine, as well as improving fuel economy. Mobil sells Mobil 1 oil.

As Mobil, maker of Mobil 1 oil, puts it: "All of [this] means that at a time when British car owners are feeling the pinch like never before, they could be driving blindly towards expensive engine problems in the future."

Here's what Dan McGoldrick, Field Marketing Advisor UK, Nordic and Benelux for ExxonMobil Lubricants & Specialities, makers of Mobil 1, said: "It's clear from this research that drivers are largely unaware of the benefits of using synthetic motor oil – and in some cases people don't even have a basic understanding of the fundamental role played by engine lubrication."

Serendipitously, Mobil 1 is currently running a promotion. Save Fuel With Mobil 1 means you can save £10 when buying a five-litre pack of Mobil 1 ESP Formula 5W-30 from a selected Esso garage
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Mobil makes oil. Other oil makers are available, possibly.