Engine oil and filter change on a Citroen Berlingo II

For the oil and filter change on a Citroen Berlingo II, you will need: a new filter, pre-change cleaner, and an oil container. Turn off the vehicle, engage the handbrake, open the bonnet, and unscrew the filler cap. Before draining, add the pre-change cleaner (like LiquiMoly, which can be found on Amazon with code B001CZSG94 for £16.24, free delivery for Prime customers) to a warm engine (after 5 minutes of running), leave it idling for 10-15 minutes, then turn off and change the oil immediately. Lift the front and support it on axle stands. Remove the lower plastic cover. Using a 21mm socket, loosen the drain bolt from the sump, finish by hand, and let the oil drain for 10 minutes. Replace the bolt with a new one, screw it in by hand, and tighten without overdoing it. For the filter: disconnect the air duct, use a 27mm socket with an extension to unscrew the flange, finish by hand, and remove the filter by turning it upside down. Clean the flange with brake cleaner. Replace the rubber seal, lubricate it, insert the new filter (Amazon code B09BDKFDKG for £5.68, free delivery for Prime customers), reassemble the flange, and tighten to 25 Nm with a torque wrench. Reattach the air duct. Replace the lower cover, lower the vehicle. Pour in 90% of the required oil, close the cap, and start the engine for 30 seconds. Turn off, wait, and check the level with the dipstick: it should be close to the maximum without exceeding it. Top up if necessary.