[DeTomaso] front seal oil leak help

[Matt]

I've had a little oil dripping on the garage floor and thought it was the remnants of a messy oil change job earlier. While getting ready for Reno and checking stuff out I found that the crank pulley had oil in it and something isn't doing it's job keeping the oil in,which is starting to make a bit of a mess on everything.
Can anyone explain what needs to be done to fix it before the drive down please?

http://www.poca.com/index.php/gallery/?g2_itemId=6897

Thank you,
Matt
3584
Reno or bust!