Originally Posted by BIGBOY2008
FISRT OF ALL WHAT IS CALLED A COAL TAR ASPHALT SEALER DOES NOT CONTAIN PETRO CHEMICALS - IT IS NOT OIL BASED. ALSO IT IS NEITHER WATER BASED NOR LATEX BASED - IT IS AN EMULSION.
Actually coal tar sealer and asphalt emulsion sealer are two completely separate products for seal coating asphalt surfaces. Even though they both generally use 30 - 35% water they probably should not be mixed together.
Back to cleaning sealer off, even though I have no idea what type of sealer you actually used I find that emulsion tends to clean off much easier than coal tar sealer.
As 2001FZ1 mentioned WD-40 works very well for removing both products with out damage to the paint as well as a product called Super Citrus.