In the back of the manual for my 2004 Optima, it gives the address of the printer of the manuals and said to contact Helm Incorporated, P. O. Box 07280, Detroit, Michigan 48207. Not sure you can reach them by phone from your country but here is the number 1-800-782-4356. Also it states, that your Kia Dealer can get it for you in your country.
Kiatechinfo is a very useful site.... but it is written as service manual....
The only place you can find owners manual is on e-bay.... either for Optima or for Magentis...(the only magentis owners manual i could find on e-bay were on cd)
Can someone tell me, in your Optima manual, do you have any info on 2,0 dohc engine?
As for asking your dilership for a manual... yaeh right.... they politely told me to piss off