Kia Sorento 2023 Owner's Manual page 548

Maintenance
Months
Miles×1,000
Km×1,000
*7
Differential oil (rear) (AWD)
*8
Transfer case oil (AWD)
Automatic transmis- Smartstream G1.6 T-GDi HEV/
sion (AT) fluid PHEV
*1. Fuel additives
Kia recommends that you use Tier 1
unleaded gasoline which has an octane
rating of RON (Research Octane Num-
ber) 95/AKI (Anti Knock Index) 91 or
higher.
For customers who do not use good
quality gasolines including fuel addi-
tives regularly, and have problems start-
ing or the engine does not run smoothly,
one bottle of additives should be added
to the fuel tank at every 13,000
km (8,000 miles).
Additives are available from an autho-
rized Kia dealer. Do not mix with other
additives.
*2. Engine oil and engine oil filter
As it is normal for engine oil to be con-
sumed during driving, the engine oil
level should be checked on regular
basis.
The engine oil change interval for nor-
mal operating conditions is based on the
use of the recommended engine specifi-
cation. If the recommended engine oil
specification is not used, then replace
the engine oil according to the mainte-
nance schedule under severe operating
conditions.
8 12
Number of months or driving distance, whichever comes first
12
8
13
24 36 48 60 72
16 24 32 40 48
26 39 52 65 78
Inspect every 65,000 km (40,000 miles) or 48 months
No service required
*3. Coolant (Engine)
When adding coolant, use only deion-
ized water or soft water for your vehicle
and never mix hard water in the coolant
filled at the factory. An improper coolant
mixture can result in serious malfunction
or engine damage.
*4. Coolant (HEV Inverter)
When adding coolant, use only deion-
ized water or soft water for your vehicle
and never mix hard water in the coolant
filled at the factory. An improper coolant
mixture can result in serious malfunction
or engine damage.
*5. Coolant (PHEV Inverter)
Have the coolant replaced by an autho-
rized Kia dealer.
*6. HSG (Hybrid Starter & Gener-
ator) belt
Inspect HSG belt for evidence of cuts,
cracks, excessive wear or oil saturation
and replace if necessary.
*7. Differential oil (rear) (AWD)
If the vehicle has been submerged in
water or in a flooded area, the fluids
should be changed as a precaution.
Scheduled maintenance service
84 96 108 120 132 144
56 64 72 80
91 104 117 130 143 156
88 96