Hi. I changed my oil today (as my boss was away) But, it was really thick and sludgey... Almost Tar like. Problem is, i only changed it 900miles ago (Oct '09) using 5/40 fully synthetic. When i did it in october, it was the same... But i assumed the previous owner hadnt changed it for a while. Im half tempted to run an oil flush next time (forte or similar) as i would in a customers car, however im worried it may cause smoking/ burning oil. i recently changed 2 split breather pipes - not sure if this could be part of the cause. Any ideas on causes/ cures?. regards Callum Ps. Also found a knacker rear Anti-roll Bar link... ordered a pair from GSF (£8 each) are these simple enough to renew?... unbolt shock/ nop nut... refit?