Old oil stains?

Old oil stains?

How do I go about getting an oil stain out that has had days to sit? I know the sweet'n'low trick when it's fresh but I have no idea days after... any ideas? Thanks!
Macro

Macro

The Water Worm

The Water Worm

I bring pictures

I bring pictures

Azaleas

Azaleas

Wrinkly leaves

Wrinkly leaves

Tomato 911.

Tomato 911.