Mr. Chai.
some answers to your question..
1) i need to do a engine oil+filter change. Any specific viscosity that i should use? or any synthetic lubs would do? engine sounds little bit rough.
- do a flush before you change, use this brand, i forgot, into the engien, run it for 15mins, drain and re-fill new semi-sync only first.. make sure it's castrol eq. dun use shell or petronas yet. castrol magnatec is a good start. engine rough could be the lifters. need to adjust them.
2) i probably should do a gear box oil+filter+gasket change as well. should flush out the existing oil?
- yes, do oil change, better if use the flushing system, then all your 13Liters or so will be new. then change the oil filter and gasket.
3) i should have it checked out as well but the brakes seems to be quite 'spongy', is that normal?
- i presume that you are running hydraulic servo which runs the power steering.
could be the ball that hold the pressure is weak, need to purge the system and bleed the brakes.
4) the OBC panel (with loads of buttons) light is very dim, & its in German! any way to rectify? if it costs loads of dough, then i can live with it.
- there is a way to change it, just need to obtain the manual. change the light bulb at the rear of the unit.
5) wiper blades rubbers are worn, possible to just change the rubber blades only instead of the whole thingy?
- change the whole wiper blades la.. only RM76.00 use the NWB not bosch !!
check also the wiper mounts wear rubber ring.
6) the air cond is blowing but not cold at all, just add gas would do? i suppose Naidu's the place to go for this. huh?
- yes check with naidu..
hope this helps.