Fuel Quality; Bioflex Engine - CITROËN C5 2013 Owner's Manual

Fuel quality

A label inside the fi ller fl ap tells you
which type of fuel to use.
4
The petrol engines are designed to
run on RON 95.
However, for better performance
(petrol engine), we
RON 98.
If you should put in fuel that is
not suitable for your vehicle's
engine type, it is imperative to
have the tank drained before
you start the engine again.
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BioFlex engine

A Biofl ex vehicle is one that has
been designed to operate equally
on unleaded petrol (95 or 98 RON)
or on bioethanol (in Europe this is a
mixture of 85 % ethanol and 15 %
unleaded petrol, known as E85).
As a result, no matter how much fuel
remains in the tank, and whatever this
fuel may be (unleaded petrol, E85 or
recommend
a mixture of the two) you can refuel at
any time with unleaded petrol (95 or
98 RON) or with bioethanol (E85).
There is no problem in running this
vehicle on only unleaded petrol.
In winter conditions, starting from
cold may sometimes seem diffi cult.
During periods of very cold weather
we recommend the use of 95 or 98
unleaded petrol in preference to E85
so as to ensure optimum starting
performance.
A C C E S S