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Practical information -> AdBlue? additive and SCR system (BlueHDi Diesel) for Your Peugeot 508 4 Door Second Generation (2018-2025)

Practical information  
AdBlue® additive and SCR system  
for BlueHDi Diesel engines  
to assure respect for the environment and  
conformity with the new euro 6 emissions  
standard, without adversely affecting the  
performance or fuel consumption of Diesel  
engines, PeugeOt has taken the decision to  
equip its vehicles with an effective system that  
associates SCR (Selective Catalytic Reduction)  
with a particle filter (FAP) for the treatment of  
exhaust gases.  
the AdBlue® additive is held in a special  
Once the AdBlue® tank is empty, a  
system required by regulations prevents  
starting of the engine.  
tank located under the boot at the rear of  
the vehicle. It has a capacity of 17 litres: this  
provides a driving range of about 12 500 miles  
(20 000 km), after which an alert is triggered  
warning you when the reserve remaining is  
enough for just 1 500 miles (2 400 km).  
If the SCR is faulty, the level of  
emissions from your vehicle will no  
longer meet the euro 6 standard: your  
vehicle becomes polluting.  
In the event of a confirmed fault  
with the SCR system, you must go  
to a PeugeOt dealer or a qualified  
workshop as soon as possible: after  
a running distance of 650 miles  
(1 100 km), a system will be triggered  
automatically to prevent engine starting.  
During each scheduled service of your vehicle  
by a PeugeOt dealer or a qualified workshop,  
the AdBlue® additive tank is refilled in order to  
allow normal operation of the SCR system.  
Presentation of the SCR system  
using an additive called AdBlue® containing  
urea, a catalytic converter turns up to 85%  
of nitrous oxides (NOx) into nitrogen and  
water, which are harmless to health and the  
environment.  
If the estimated mileage between two services  
is greater than 12 500 miles (20 000 km), we  
recommend that you go to a PeugeOt dealer  
or a qualified workshop to have the necessary  
top-up carried out.  
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