You have to take it to a mechanic i guess since it doesn't have a dipstick.
take cover off from fuse box and diagram is inside of cover
Just about ALL parts are available from Daewoo USA, Carson Ca. This link should take you their http://www.daewoous.com/
On the back of the engine block. 3 bolts to take it off, easy to do but hard to reach.
A Daewoo Leganza may use up three different types of antifreeze. Those are Valvoline, zerex, and Beck. However, you may also the use the manufacturer's brand.
it take dexcool its a orange antifreeze that is approved by gm.
It takes the green Antifreeze
The fuel filter is located at the rear of the engine bay, at the top near the firewall. Take care removing and a special tool may be required.
Dexcool
Green
Dexcool
If the transmission is electronically controlled - Dexron III, and if manually controlled - Dexron II. If there is no 'dip stick' for testing the fluid level, then the transmission is probably electronic control.