Hi all, would like to ask you more experienced guys about a e39 525d 2003 i was going to purchase couple of days ago, car was 94,000 miles on clock and genuine from big local car dealer,took in a trade in, car had some scratches and chips here and there and alloys were badly needing refurbed,but the thing that really put me off was took off oil filler cap and was very slight light green brown residue which put me off more than anything,car sounded sweet when started up no fans cut in after listening to it for 3 or 4 mins purring away nicely, garage had evidence of servicing from new.was i being to hasty and maybe was only moisture? Out of curiosity for readers of post car was for sale at £5488 with 3 owners, just about full service history, and is "es se" model manual, blue in colour with blue cloth interior and silver not wood inlays. Any advice gratefully recieved.