If you've already scattered kitty litter or other absorbant, next apply Dawn dish liquid, directly to pavers affected with stains. Let set 15-30 minutes, then scrub with a push broom or similar, and rinse.
You may need to have pavers sealed every few years, or place "pig mats" (available on line or at NAPA Auto beneath your vehicle.
This will also work on landscape pavers, concrete, brick, etc.. Good Luck :) https://www.wikihow.com/Clean-Hydraulic-Fluid-from-Asphalt
Brake fluid https://www.youtube.com/watch?v=G5HP0k9IeaQ&t=151sor burn it off https://www.youtube.com/watch?v=iDdRz5zjspg these work on any automotive spills on most surfaces also can scrub with tide detergent and stiff broom