Oil on the strut is an indication that the strut is no good. Time to replace. I doubt that it is the source of the oil on the oil pan though....I do not think they hold that much oil.

Non the less, time to replace it. I'd do both fronts, unless the other side was already replaced.

 

I just replaced both front struts 3 weeks ago, I think it's just oil spraying from the oil pan?

 

Okay so I checked everything last night and there were two different oils under the truck, one from the oil pan and the other from my strut, so my strut is most likely blown which is probably why I noticed a rougher ride in the last couple weeks, only had them for 3 weeks but thank god for warranty