guys, which of the 2 is easier to perform by yourself? i understand bleeding the brake fluid is abit trickier cos you don't want air bubbles in the system. handy hints anyone??? cheers.

probably easier and safer to ring around for prices for a brake fluid flush. shouldn't be more than $50 and less risk to your paint (mechanics prob if a spill happens)

As for the coolant it can be done at home, you need to drain and flush the radiator, block and heater core.
easiest way is to remove the radiator cap and drain bung,
remove the block drain bung if it isn't siezed, might have to clean the hole out to get flow.
disconnect a heater hose at the engine,
turn the heater to hot and stick a garden hose inside the heater hose.
flush water through the motor and also fill and quickly drain a few times to drag the crap out.
putting water pressure in through the block drain also loosens up some of the rust in the bottom of the water gallery.
Magnas use 50% coolant, 50% water mix
(I don't know where abouts on a V6 but on the 2.6L 4 cyl there is a coolant drain bung in the block on the exhaust side behind a cover near the oil light switch)

Leave brake bleeding to the pro's, its a tricky job and really needs 2 people to do if your going to do it yourself.

A cooland flush its pretty easy, just expect to get wet :) Don't drain coolant on the grass too, it can get parents very very angry when a big dead patch develops shortly after lol

does coolant levels ever deplete? cos a few months ago there was quite a substantial drop in coolant levels and i had to top it up.

does coolant levels ever deplete? cos a few months ago there was quite a substantial drop in coolant levels and i had to top it up.

Yes, coolant seems to just disappear on you...if all of it seems to just disappear within 2 weeks, then obviously you have a problem :)