Petrol and diesel owners could save £120 a year with one winter change

Motorists could reduce fuel costs this winter by switching to the correct engine oil, a small change that experts say can improve fuel efficiency and save up to £120 annually.

Engine oil often overlooked in winter prep

While many drivers focus on tyres or batteries, experts stress that engine oil plays a crucial role in cold-weather performance and fuel consumption.

Cold weather thickens degraded oil

In lower temperatures, old or incorrect oil becomes thicker, slowing circulation and making it harder for the engine to reach its optimal temperature—using more fuel in the process.

Changing oil improves efficiency

Switching to the manufacturer-recommended cold-flow oil grade can boost cold-start performance and reduce the strain on the engine during winter drives.

Savings can reach £120 per year

For drivers covering 15,000 miles annually at 36 mpg, using the right oil could lead to a 4% efficiency gain—saving roughly £120 at current fuel prices.

Results vary by driving habits

Actual savings depend on factors like mileage, fuel prices, and driving style. High-mileage drivers stand to benefit the most from improved efficiency.

RAC urges regular oil changes

According to the RAC, oil should be changed every 12 months or 12,000 miles, with some drivers opting for a 6,000-mile interval for better performance.

Signs your oil needs changing

Clicking or knocking noises from the engine, excess exhaust smoke, and poor fuel economy are key indicators that oil may need replacing.

Fuel economy tied to oil condition

The RAC lists reduced fuel efficiency as one of the clearest signs of oil degradation, highlighting its direct impact on running costs.

Low-cost maintenance step

Experts describe oil checks and changes as a simple, affordable step that can be done in autumn to prepare vehicles for winter’s demands.

Manufacturer specs matter

Using the specific oil grade recommended by the vehicle manufacturer ensures better cold-weather flow, engine protection, and fuel efficiency.

Small change, big winter savings

As temperatures drop, this one maintenance tip could help drivers cut costs and keep engines running smoother through the colder months.

This article is made and published by Asger Risom, which may have used AI in the preparation