Bottle of caster oil , plumbed into the exaughst after the catalytic converter, use a simple fused switch and a windshield wiper pump.This will give all the smoke you need.
A similar setup with a rail under the rear bumper and several irrigation nozzles and heavier pump will lay down a good oil slick as well.
Smooth paved road,150-200 feet before a good corner,and scratch a couple of pursuers.
It's james bondish,but thats the right way to do it.
Used motor oil is fine for a slick,lousy for smoke,castor oil or marvwels mystery oil is the ticket.