Use any dishwashing soap and water, hot would work better. This is no different than washing a salad bowl.
By siris (Guest Post)
08/12/2008
I'd use baking soda on a rag.
By chris (Guest Post)
08/12/2008
What this sounds like, is old, oxidized salad oil, right? Find something like straight dawn foam dish soap. Put the car in the shade and keep it damp while the dawn works on it. You could add a little water to the dawn, but it needs to sit on it for awhile. If it's only on the glass part, you can even get some drain cleaner, just don't get it on the rubber seal. This will cut old grease. Oven cleaner, too.
By Harry (Guest Post)
08/11/2008
You could try the previous post or go to a big box store or a auto parts store and buy a bottle of water soluble degreaser.
By
08/11/2008
Blot the area with either Boston or Bibb lettuce. After that step, wash with Windex or another household glass cleaner.
Seriously, maybe a bit of dawn first-- some grease cutter. At least you don't have to worry about being sloppy with the clean-up.