See also:

Rear differential (4WD)
Checking or changing rear differential fluid Have rear differential fluid checked or changed by an Authorized Kia Dealer according to the Maintenance Schedule at the beginning of this section. ...

Engine and Specifications:
KIA Rio and Rio5 will be installed with 1.6 L capacity I-4 engine. This engine will be mated with five speed manual gear transmission. Rio LX and SX trims will be installed with four speed automat ...

Fuel requirements
unleaded fuel having a pump octane number ((R+M)/2) of 87 (Research Octane Number 91) or higher. Your new vehicle is designed to obtain maximum performance with UNLEADED FUEL, as well as minimize ...