seen on another forum

This was brought about because my car seem to have been an oil leak under it, I am not sure what has created it. QuickFit guy said it may be the filter not been put on properly and oilded before fitting. Thing is that I did had the oil filter change in it already, this didn't not help with the leak. The fact that is is underneath the car makes it difficult.

Don't know if the use of non Zetec oil, contributes to this problem