If it is your own car consider changing the oil more frequently than some of the recommended 2 years or 20,000 miles guides.
The most important element of car servicing is healthy engine oil.
So, for example, if her engine fails then she will have to pay to get it fixed at her own cost.
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Also clean bird droppings off your bodywork as soon as possible to avoid the lacquer being damaged.
There are simple things you can do to extend the mechanical parts of your car such as avoiding potholes (if you can), not holding the car on the clutch at traffic lights or junctions (it will eventually burn it out as it is a wearable item just like brake pads), letting the engine warm up before any hard acceleration and letting the oil recirculate after driving hard to cool and lubricate the engine. Vehicle should be serviced in accordance with the manufacturer's recommendations.