Kia CERATO Owner's Manual page 382

Maintenance
NO.
*7 Fuel additives (Gasoline)
*8 Fuel filter cartridge (Diesel)
8-12
ITEM
Kia recommends that you use unleaded gasoline which has an octane rating
of RON (Research Octane Number) 95 / AKI (Anti Knock Index) 91 or higher
(for Europe) or Octane Rating of RON (Research Octane Number) 91 / AKI
(Anti-Knock Index) 87 or higher (except Europe).
For customers who do not use good quality gasolines including fuel additives
regularly, and have problems starting or the engine does not run smoothly,
one
15,000km(10,000miles)
10,000km(6,500miles) (except Europe, Australia and New Zealand, China,
Brazil)/ 5,000km(3,000miles) (for China, Brazil). Additives are available from a
professional workshop along with information on how to use them. Kia rec‐
ommends to visit an authorized Kia dealer/service partner. Do not mix other
additives.
This maintenance schedule depends on fuel quality. It is applicable only when
using a qualified fuel <"EN590 or equivalent">. If the diesel fuel specifications
don't meet the EN590, it must be replaced more frequently. If there are
some important safety matters like fuel flow restriction, surging, loss of
power, hard starting problem etc., replace the fuel filter immediately regard‐
less of maintenance schedule and consult a professional workshop for more
details. Kia recommends to consult an authorized Kia dealer/service partner.
bottle of additives
(for
REMARK
added to the fuel
Europe, Australia and
tank at every
New Zealand)/