These cars have a history of blocked oil strainers/pick ups,plenty of horror stories on the old site, so i decided to check mine, the cars done 45000mls, the oil has been changed every 6-8000mls on average.
The job itself is'nt bad, i used car ramps,handbrake on,bricks choked the rear wheels and left the car in 1st gear.To access the sump you remove the undercover tray (10mm bolts and a crosshead for the plastic plug),then drain the oil, you need to move the water pipes to oneside, held at both side by 10mm bolt, this lets them swing out of the way to drop the sump.The sump is held on with 10mm bolts, note the 3 shorter ones when you remove them, i used tipex to mark the sump as a reminder, once all the bolts are undone you need to prize the sump off (carefully) it's held in place by silicon NO GASKET (so remember to buy some before you start this job) I used a narrow paint scraper to work round the sump and break the seal, you can also use the welded nut on the sump and screw a bolt in to lift the other side.
Once the sump is off you'll see the oil pick up, if it's full of crap it'll need removing and cleaning, gladly mine was very clean!
Refit in reverse order, make sure all the gasket surfaces are clean before you apply the sealer and also the sump bolts are cleaned of any silicon from their threads, otherwise you could damage/split the alloy mounting plate!
Will try and post pictures when finished.
Dave