Note: A suitable square-section wrench may be required to undo the transmission filler/level and drain plugs on some models. These wrenches can be obtained from most motor factors, or from your Peugeot dealer.
1. This operation is much quicker and more effective if the car is first taken on a journey of sufficient length to warm the engine/transmission up to normal operating temperature.
2. Park the car on level ground, switch off the ignition and apply the handbrake firmly. For improved access, jack up the front of the car and support it securely on axle stands (see "Jacking and vehicle support"). Note that the car must be lowered to the ground and level, to ensure accuracy, when refilling and checking the oil level.
3. Wipe clean the area around the filler/level plug, which is situated on the left-hand end of the transmission, next to the end cover. Unscrew the filler/level plug from the transmission and recover the sealing washer (see illustration).
2.3. Unscrew the filler/level plug from the transmission and recover the sealing washer
4. Position a suitable container under the drain plug, situated on the left-hand side of the differential housing and unscrew the plug from the transmission (see illustration).
2.4. Using the special square-section wrench to unscrew the transmission drain plug
5. Allow the oil to drain completely into the container. If the oil is hot, take precautions against scalding. Glean both the filler/level and the drain plugs, being especially careful to wipe any metallic particles off the magnetic inserts. Discard the original sealing washers; they should be renewed whenever they are disturbed.
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6. When the oil has finished draining, clean the drain plug threads and those of the transmission casing. Fit a new sealing washer and refit the drain plug, tightening it to the specified torque wrench setting. It the car was raised for the draining operation, now lower it to the ground.
7. Refilling the transmission is an extremely awkward operation. Above all, allow plenty of time for the oil level to settle properly before checking the level. Note that the car must be parked on flat level ground when checking the oil level.
8. Refill the transmission with the exact amount of the specified type of oil, then check the oil level as described in Chapter 1A or 1B. If the correct amount was poured into the transmission and a large amount flows out on checking the level, refit the filler/level plug and take the car on a short journey. When the new oil is distributed fully around the transmission components, check the level again on your return and top-up if necessary.