If the petrolum OIL fluid in the self leveling system WAS contaminated with BRAKE FLUID (which is ester based), all the rubber components are probably ruined beyond salvaging. Brake Fluid would leave a distinct smell (of brake fluid of course).

That means REPLACING all the struts, leveling valves, accumulators/spheres, and probably a rebuild of the pump. All doen AFTER a thorough flush with petroleum based oil--I'd use 0w30 mobil 1 as flush oil. Most likely cost $5K