the only product that will work is: isopropyl rubbing alcohol.

wash the paint surface... saturate a soft towel in the rubbing alcohol and rub lightly...allowing the product to do the work... not all elbow grease. polish the surface and wax.

the sooner it get it off the paint... the better. over time the tree sap will etch the surface (like a bird dropping will do).

don't waste your time with a clay bar... its not effective w/ tree sap.

i had owned a detailing business for over 10 years... i have seen it all.

cheers!