User Manual - Page 510

For KIA OPTIMA 2018 .

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99
Specifications, Consumer information, Reporting safety defects
Recommended SAE viscosity
number
Engine oil viscosity (thickness) has an
effect on fuel economy and cold
weather operating (engine start and
engine oil flowability). Lower viscosity
engine oils can provide better fuel
economy and cold weather perform-
ance; however, higher viscosity
engine oils are required for satisfacto-
ry lubrication in hot weather. Using
oils of any viscosity other than those
recommended could result in engine
damage. When choosing an oil, con-
sider the range of temperature your
vehicle will be operated in before the
next oil change.Proceed to select the
recommended oil viscosity from the
chart.
Temperature Range for SAE Viscosity Numbers
Temperature
°C
(°F)
-30 -20 -10 0 10 20 30 40 50
-10 0 20 40 60 80 100 120
Gasoline Engine Oil
(Theta II 2.0 T-GDI,
Gamma 1.6 T-GDI)
20W-50
10W-30
15W-40
5W-30, 5W-40
Gasoline Engine Oil
(
Theta II 2.4 GDI
)
10W-30
5W-20, 5W-30
An engine oil displaying this API Certification Mark con-
forms to the international Lubricant Specification
Advisory Commmittee (ILSAC). It is recommended to
only use engine oils that uphold this API Certification
Mark
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