Longgone
John/68 Barracuda & Dart
Removes tar quite well too.
I love WD40 for a lot of uses. I used it on my new engine after washing it down with soap and water, not a spot of rust on the bare metal.
Don't forget, it fixes absolutely EVERYTHING wrong with your bike when you're between the ages of 9-11!!!
I did that with a 383 bare block I was storing. Rusted up after a while. It's not a very good rust peventitive.