My diff seems to be "clonking" more than normal having covered a few hundred miles since Monkfish fitted the Harrop Cover. Does this mean it needs more oil or more of the friction modifier thats added also...? Only happens at low speed so Im sure its just the diff winding up.
Mine's started lightly clonking again after probably 30k miles since being sorted by MF. I assume it needs more modifier, but does the oil change that much??
