Well today I pulled the differential cover to drain the fluid and clean out all the mud and water I expected to be there. (I dumped the rear pretty deep the other day.) But there really wasnt much of anything. A little grime but nothing out of the normal. Are the breather tubes pretty tight under normal circumstances or would they usually suck everything up if put in water or mud? Just curious cause i want to run the breather line up to the firewall but im wondering if its worth it. 79 Jimmy, 5" lift 35 M/T with a 383 puttin out 400hp and 450lb/ft. 4.11s Locked front and back.