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Practical information -> Checking levels for Your Peugeot 308 4 Door 2021-2025

Practical information  
Diesel engine  
Opening  
Closing  
7
► Lower the bonnet and release it near the end  
of its travel.  
► Check the locking.  
Because of the presence of electrical  
equipment under the bonnet, it is strongly  
recommended that exposure to water (rain,  
washing, etc.) be limited.  
1. Screenwash fluid reservoir  
2. Engine coolant reservoir  
3. Brake fluid reservoir  
4. Battery/Fuses  
5. Remote earth point (-)  
6. Fusebox  
Engine compartment  
The engine shown here is an example for  
illustrative purposes only.  
The locations of the following components may  
vary:  
► Open the left-hand front door.  
► Pull the interior release lever, located at the  
bottom of the door frame, towards you.  
7. Air filter  
– Air filter.  
8. Engine oil filler cap  
9. Engine oil dipstick  
– Engine oil dipstick.  
– Engine oil filler cap.  
Petrol engine  
Diesel fuel system  
This system is under very high pressure.  
All work must be carried out only by a  
PEUGEOT dealer or a qualified workshop  
Checking levels  
Check all of the following levels regularly in  
accordance with the manufacturer's service  
schedule. Top them up if required, unless  
otherwise indicated.  
► Lift the exterior safety catch and raise the  
bonnet.  
► Unclip the stay from its housing and place it  
in the support slot to hold the bonnet open.  
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Practical information  
If a level drops significantly, have the  
corresponding system checked by a PEUGEOT  
dealer or a qualified workshop.  
ignition is switched on (for vehicles equipped  
with an electric gauge), or using the dipstick.  
It is normal to top up the oil level between two  
services (or oil changes). It is recommended  
that you check the level, and top up if necessary,  
every 3,000 miles (5,000 km).  
– below mark B: top up the engine oil  
immediately.  
Oil grade  
The fluids must comply with the  
manufacturer's requirements and with  
the vehicle's engine.  
Before topping up or changing the  
engine oil, check that the oil is suitable  
for your engine and complies with the  
recommendations in the service schedule  
supplied with the vehicle (or available  
from your PEUGEOT dealer or qualified  
workshop).  
In order to maintain the reliability of the  
engine and emissions control system,  
never use additives in the engine oil.  
Take care when working under the  
bonnet, as certain areas of the engine  
may be extremely hot (risk of burns) and the  
cooling fan could start at any time (even with  
the ignition off).  
Use of non-recommended oil may invalidate  
your warranty in the event of engine failure.  
Checking using the dipstick  
For the location of the dipstick, please refer  
to the illustration of the corresponding engine  
compartment.  
Topping up the engine oil level  
Used products  
► Grasp the dipstick by its coloured grip and  
pull it out completely.  
► Wipe the end of the dipstick using a clean,  
lint-free cloth.  
For the location of the engine oil filler cap, please  
refer to the corresponding engine compartment  
illustration.  
► Add oil in small quantities, avoiding any spills  
on engine components (risk of fire).  
► Wait a few minutes before checking the level  
again using the dipstick.  
Avoid prolonged contact of used oil or  
fluids with the skin.  
Most of these fluids are harmful to health and  
very corrosive.  
Do not discard used oil or fluids into  
sewers or onto the ground.  
Top up the level if necessary.  
Empty used oil into the containers reserved  
for this purpose at a PEUGEOT dealer or a  
qualified workshop.  
► After checking the level, carefully screw the  
oil filler cap back on and replace the dipstick in  
its tube.  
► Reinsert the dipstick and push fully down,  
then pull it out again to visually check the oil  
level: the correct level is between marks A (max)  
and B (min).  
Do not start the engine if the level is:  
– above mark A: contact a PEUGEOT dealer or  
a qualified workshop.  
The oil level indication displayed on the  
instrument panel when the ignition is  
switched on is not valid for 30 minutes  
following an addition of oil.  
Engine oil  
The level is checked, with the engine  
having been switched off for at least 30  
minutes and on level ground, either using the oil  
level indicator in the instrument panel when the  
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