A driving expert has shared two often-overlooked refuelling tips – claiming they can help petrol and diesel drivers get more mileage from each tank. The car expert, known as @chequanlaosi on TikTok, warns against refuelling when a tanker truck is servicing a station.
He explains that the process stirs up impurities like sediment and water in the station’s fuel storage tanks, which can limit an engine’s service life and performance. Despite modern fuel stations having pump filters to mitigate this issue, a tanker truck can still stir up impurities.
The expert also advises against overfilling your car’s fuel tank. He suggests not activating a petrol or diesel nozzle past its initial off-click to avoid clogging the fuel tank’s vents or evaporative emissions (EVAP) system, which could cause issues with fuel flow and emissions control.
When you continue to pump petrol beyond the initial click, your car’s purge valve, which draws air into the engine and connects to your fuel tank, can end up sucking raw fuel into the valve, causing the engine to flood.
According to J.D. Power, a typical purge valve replacement job can set you back between $100 and $500, reports the Express.
Petrol pumps know when to stop due to a small tube that extends into your car’s fuel tank. This tube has a hole near its end that allows air to escape as you fill the tank.
Once the tank is full, the rising fuel level covers this hole, triggering a cut-off of petrol or diesel flow to prevent overfilling.
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