I had some resin residue from pine trees on my '00 SL2 (the sleek, blue,
beauty) and used some maguiars paint cleaner.  Did a good job, probably
a little more expensive than peanut butter, and no sandwich.

I have used peanut butter for years to take off the gum left by labels.
Technically seaking, the oil emulsifies the gum and the solids both keep any
un-emulsified gum in suspension while also providing a very gentle abrasive
action. The process is to apply a dab of peanut butter and lightly rub it
in. Let sit for 15 minutes and rub some more. Wipe off, inspect and repeat
as necessary. Generally works very well.

The other goodie is GoJo waterless hand cleaner which is basically mineral
spirits and lanolin (aka sheep sweat). Be sure to get the type without
pumice! If the peanut butter trick doesn't work, try the GoJo. GoJo works
well also on removing grease stains from clothing.

Peanut butter is good for a quick snack - GoJo is not recommended for
ingestion...<grin>
   Oppie

A clay bar made for automotive detailing (costs about $10 from any auto
parts store) does a good job at removing tree sap.  Heck, it removes almost
anything else stuck to your paint too.

Lane     [ lane (at) evilplastic.com ]
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Visit my Saturn Car Audio and Performance Page at http://www.evilplastic.com