With petrol prices hitting another record high, families and businesses are being hit in the pocket every time they fill the tank. The RAC said today that it now costs £90 to fill a family car with petrol. The average price of a litre of petrol rose to 163.71p on Monday, and diesel also hit a fresh record of 173.68p. The war in Ukraine triggered a surge in oil costs. With prices so high, how do you ensure you get the most out of your tank of fuel? Greentech company SulNOx Group PLC has these top 10 tips. \tMaintain your vehicle: Make sure your vehicle is regularly serviced, and regularly maintained between services. If an engine is not serviced regularly, it will use more fuel than one that is well-maintained. \tCheck your tyre pressure: It’s vital to make sure your tyres are inflated to the pressure shown in the car’s manual. Underinflated tyres can affect fuel economy - and so can overinflated tyres. Remember, your tyre pressure may need to be higher if you are carrying more passengers and/or a heavy load \tSlow down: Excessive speed burns more fuel, as does harsh acceleration. Slow and steady wins the race! \tBe smooth: In line with point 3, drive as smoothly as possible. Anticipate what’s going on ahead of you and try to slow down gradually by easing off the accelerator. \tEasy on the A/C: Air conditioning burns more fuel, so don’t use it unless you need to. \tTake it off: Lots of us have roof boxes and roof bars these days - and it’s often easier to leave them on. But the wind resistance caused by doing this means they use more fuel because of ‘drag’. \tIf you don’t use it, lose it: Lighter cars need less fuel, so don’t carry unnecessary items in the boot or the back seat. \tDon’t fill up: The added weight of a full tank of fuel means burning more fuel. Next time, consider only filling half way. Don’t be tempted to run your tank down too much though. Always fill up before the red light comes on. \tGet more bang for your buck: Revolutionary SulNOxEco™ Fuel Conditioners improve the combustion of light fuels including gasoline and diesel. In tests, they have proven to reduce fuel consumption by 8-10% and are certified to comply with fuel standards so any warranties remain intact. Adding SulNOx to your tank takes you further and reduces harmful emissions. \tPlan ahead: Avoid rush hour black spots if you can. Use your SatNav to keep you on the right track and warn you of any potential hold-ups.