"As the lubricating oil is pumped around the engine, it collects tiny fragments of metal from the moving parts. The oil filter is designed to remove these fragments. Most filters are designed to be replaced at service intervals."
Driving Theory Test is the online platform for UK drivers that want to study and pass the UK theory test on their first try. The system is designed to teach you the study material interactively. Plus, our practice questions cover all sections of the Highway Code. So, you have a comprehensive review of all the need-to-know information to sit the DVSA theory test.