The Ash

Hi all I has some issues last year with my car, and spent a chunk of cash on new injectors and two new fuel pumps plus other stuff. This was 6 months / 2,000 miles ago (and not sure if there's a linked between the pumps and the problem - they're fitted in the sump I believe!?) and when I drove home last night, I noticed the oil - put a tray under and it's all gone!? Any views?