Outer Limits 4x4 Board

4.3 hilux diff seized some rust on the crown it was sitting around for a year in the diff housing whats the best way to fix it and could i just let it sit in diesal for a week to get it un stuck it has some movement no teeth missing









its the one that has the brown staff on it on ur right

Whats actually seized is it the bearings or crown wheel to pinion,if the C/P is rusty its going to be no good anyway

the bearing is seized how much u rekon it would cost to change