I've got around 600 miles on my new third and it still gets really hot after driving a high speed (55mph) for a while. Is this normal?...is it hurting anything? How long should this go on before the gears finally break in all the way and the rearend runs at a normal temp? I babied it the first few hundred miles and the next few hundred miles I got it up to highway speed.

85 SR5 4runner....Too many hours of work put into it, Hacked, Beaten, and Still running after all I've put it through

87 Turbo Pickup...Bought Her for $500 put another $500 in her and she's running like a dream.