ok children let me explain (again)
the gdi have an electronic trottle body , a little sensor under the accel pedal controls an actuator in the trottle body (or what we know as the butterfly shaft) this actuator is where all the problems stem from since the magnets in the coil tend to unstick there would be to induction to operate the actuator and the car would eventually go in to "limp mode"
the glx would not give this problem because the 4g18 has the normal cable type trottle body where u press the accel pedal and that pulls the trottle atuator open via a cable
as with body parts expensive just like any newer model car, bobby's in d bamboo have body parts cheap, also kawal singh in chaguanas supplys diamond motors with a lot of mechanical parts (which you pay big $$$ for and its not oem), so go yuh self by kawal singh and buy d parts
in both my 4g15 gdi and the 4g18 i use shell helix syn blend 15w-50 (the blue bottle) and the honda cvt fluid, no problems !!! and the both have the recommended specs
i know a lot of people have it and use it often

but my cell # again is 717-1069 (ryan) if u have questions or problems (no i dont have a repair shop and do not plan to open one, just offering free advice) about the cedia / lancer (ck & cs)